; LLVM IR from hpcg-benchmark/hpcg :: src/ComputeSYMGS_ref.ll (Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%struct.Vector_STRUCT = type { i32, ptr, ptr }
%struct.SparseMatrix_STRUCT = type { ptr, ptr, i64, i64, i32, i32, i32, ptr, ptr, ptr, ptr, ptr, %"class.std::unordered_map", %"class.std::vector", i8, i8, i8, i8, ptr, ptr, ptr, i32, i32, i32, ptr, ptr, ptr, ptr, ptr }
%"class.std::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [38 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [78 x i8], align 1
@__PRETTY_FUNCTION__._Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_ = external hidden unnamed_addr constant [69 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_(ptr noundef nonnull align 8 dereferenceable(256) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca ptr, align 8
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  %16 = alloca double, align 8
  %17 = alloca double, align 8
  %18 = alloca i32, align 4
  %19 = alloca i32, align 4
  %20 = alloca i32, align 4
  %21 = alloca ptr, align 8
  %22 = alloca ptr, align 8
  %23 = alloca i32, align 4
  %24 = alloca double, align 8
  %25 = alloca double, align 8
  %26 = alloca i32, align 4
  %27 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.Vector_STRUCT, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %29, align 8, !tbaa !9
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %31, i32 0, i32 5
  %33 = load i32, ptr %32, align 4, !tbaa !12
  %34 = icmp eq i32 %30, %33
  br i1 %34, label %35, label %36

35:                                               ; preds = %3
  br label %38

36:                                               ; preds = %3
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 56, ptr noundef @__PRETTY_FUNCTION__._Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_) #5
  unreachable

37:                                               ; No predecessors!
  br label %38

38:                                               ; preds = %37, %35
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  call void @_Z12ExchangeHaloRK19SparseMatrix_STRUCTR13Vector_STRUCT(ptr noundef nonnull align 8 dereferenceable(256) %39, ptr noundef nonnull align 8 dereferenceable(24) %40)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %41, i32 0, i32 4
  %43 = load i32, ptr %42, align 8, !tbaa !26
  store i32 %43, ptr %7, align 4, !tbaa !27
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %44, i32 0, i32 11
  %46 = load ptr, ptr %45, align 8, !tbaa !28
  store ptr %46, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  %47 = load ptr, ptr %5, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.Vector_STRUCT, ptr %47, i32 0, i32 1
  %49 = load ptr, ptr %48, align 8, !tbaa !29
  store ptr %49, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #6
  %50 = load ptr, ptr %6, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.Vector_STRUCT, ptr %50, i32 0, i32 1
  %52 = load ptr, ptr %51, align 8, !tbaa !29
  store ptr %52, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #6
  store i32 0, ptr %11, align 4, !tbaa !27
  br label %53

53:                                               ; preds = %136, %38
  %54 = load i32, ptr %11, align 4, !tbaa !27
  %55 = load i32, ptr %7, align 4, !tbaa !27
  %56 = icmp slt i32 %54, %55
  br i1 %56, label %58, label %57

57:                                               ; preds = %53
  store i32 2, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %139

58:                                               ; preds = %53
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  %59 = load ptr, ptr %4, align 8, !tbaa !5
  %60 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %59, i32 0, i32 10
  %61 = load ptr, ptr %60, align 8, !tbaa !30
  %62 = load i32, ptr %11, align 4, !tbaa !27
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds ptr, ptr %61, i64 %63
  %65 = load ptr, ptr %64, align 8, !tbaa !5
  store ptr %65, ptr %13, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #6
  %66 = load ptr, ptr %4, align 8, !tbaa !5
  %67 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %66, i32 0, i32 9
  %68 = load ptr, ptr %67, align 8, !tbaa !31
  %69 = load i32, ptr %11, align 4, !tbaa !27
  %70 = sext i32 %69 to i64
  %71 = getelementptr inbounds ptr, ptr %68, i64 %70
  %72 = load ptr, ptr %71, align 8, !tbaa !5
  store ptr %72, ptr %14, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #6
  %73 = load ptr, ptr %4, align 8, !tbaa !5
  %74 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %73, i32 0, i32 7
  %75 = load ptr, ptr %74, align 8, !tbaa !32
  %76 = load i32, ptr %11, align 4, !tbaa !27
  %77 = sext i32 %76 to i64
  %78 = getelementptr inbounds i8, ptr %75, i64 %77
  %79 = load i8, ptr %78, align 1, !tbaa !33
  %80 = sext i8 %79 to i32
  store i32 %80, ptr %15, align 4, !tbaa !27
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #6
  %81 = load ptr, ptr %8, align 8, !tbaa !5
  %82 = load i32, ptr %11, align 4, !tbaa !27
  %83 = sext i32 %82 to i64
  %84 = getelementptr inbounds ptr, ptr %81, i64 %83
  %85 = load ptr, ptr %84, align 8, !tbaa !5
  %86 = getelementptr inbounds double, ptr %85, i64 0
  %87 = load double, ptr %86, align 8, !tbaa !34
  store double %87, ptr %16, align 8, !tbaa !34
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #6
  %88 = load ptr, ptr %9, align 8, !tbaa !5
  %89 = load i32, ptr %11, align 4, !tbaa !27
  %90 = sext i32 %89 to i64
  %91 = getelementptr inbounds double, ptr %88, i64 %90
  %92 = load double, ptr %91, align 8, !tbaa !34
  store double %92, ptr %17, align 8, !tbaa !34
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #6
  store i32 0, ptr %18, align 4, !tbaa !27
  br label %93

93:                                               ; preds = %117, %58
  %94 = load i32, ptr %18, align 4, !tbaa !27
  %95 = load i32, ptr %15, align 4, !tbaa !27
  %96 = icmp slt i32 %94, %95
  br i1 %96, label %98, label %97

97:                                               ; preds = %93
  store i32 5, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #6
  br label %120

98:                                               ; preds = %93
  call void @llvm.lifetime.start.p0(i64 4, ptr %19) #6
  %99 = load ptr, ptr %14, align 8, !tbaa !5
  %100 = load i32, ptr %18, align 4, !tbaa !27
  %101 = sext i32 %100 to i64
  %102 = getelementptr inbounds i32, ptr %99, i64 %101
  %103 = load i32, ptr %102, align 4, !tbaa !27
  store i32 %103, ptr %19, align 4, !tbaa !27
  %104 = load ptr, ptr %13, align 8, !tbaa !5
  %105 = load i32, ptr %18, align 4, !tbaa !27
  %106 = sext i32 %105 to i64
  %107 = getelementptr inbounds double, ptr %104, i64 %106
  %108 = load double, ptr %107, align 8, !tbaa !34
  %109 = load ptr, ptr %10, align 8, !tbaa !5
  %110 = load i32, ptr %19, align 4, !tbaa !27
  %111 = sext i32 %110 to i64
  %112 = getelementptr inbounds double, ptr %109, i64 %111
  %113 = load double, ptr %112, align 8, !tbaa !34
  %114 = load double, ptr %17, align 8, !tbaa !34
  %115 = fneg double %108
  %116 = call double @llvm.fmuladd.f64(double %115, double %113, double %114)
  store double %116, ptr %17, align 8, !tbaa !34
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #6
  br label %117

117:                                              ; preds = %98
  %118 = load i32, ptr %18, align 4, !tbaa !27
  %119 = add nsw i32 %118, 1
  store i32 %119, ptr %18, align 4, !tbaa !27
  br label %93, !llvm.loop !36

120:                                              ; preds = %97
  %121 = load ptr, ptr %10, align 8, !tbaa !5
  %122 = load i32, ptr %11, align 4, !tbaa !27
  %123 = sext i32 %122 to i64
  %124 = getelementptr inbounds double, ptr %121, i64 %123
  %125 = load double, ptr %124, align 8, !tbaa !34
  %126 = load double, ptr %16, align 8, !tbaa !34
  %127 = load double, ptr %17, align 8, !tbaa !34
  %128 = call double @llvm.fmuladd.f64(double %125, double %126, double %127)
  store double %128, ptr %17, align 8, !tbaa !34
  %129 = load double, ptr %17, align 8, !tbaa !34
  %130 = load double, ptr %16, align 8, !tbaa !34
  %131 = fdiv double %129, %130
  %132 = load ptr, ptr %10, align 8, !tbaa !5
  %133 = load i32, ptr %11, align 4, !tbaa !27
  %134 = sext i32 %133 to i64
  %135 = getelementptr inbounds double, ptr %132, i64 %134
  store double %131, ptr %135, align 8, !tbaa !34
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  br label %136

136:                                              ; preds = %120
  %137 = load i32, ptr %11, align 4, !tbaa !27
  %138 = add nsw i32 %137, 1
  store i32 %138, ptr %11, align 4, !tbaa !27
  br label %53, !llvm.loop !38

139:                                              ; preds = %57
  call void @llvm.lifetime.start.p0(i64 4, ptr %20) #6
  %140 = load i32, ptr %7, align 4, !tbaa !27
  %141 = sub nsw i32 %140, 1
  store i32 %141, ptr %20, align 4, !tbaa !27
  br label %142

142:                                              ; preds = %224, %139
  %143 = load i32, ptr %20, align 4, !tbaa !27
  %144 = icmp sge i32 %143, 0
  br i1 %144, label %146, label %145

145:                                              ; preds = %142
  store i32 8, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %20) #6
  br label %227

146:                                              ; preds = %142
  call void @llvm.lifetime.start.p0(i64 8, ptr %21) #6
  %147 = load ptr, ptr %4, align 8, !tbaa !5
  %148 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %147, i32 0, i32 10
  %149 = load ptr, ptr %148, align 8, !tbaa !30
  %150 = load i32, ptr %20, align 4, !tbaa !27
  %151 = sext i32 %150 to i64
  %152 = getelementptr inbounds ptr, ptr %149, i64 %151
  %153 = load ptr, ptr %152, align 8, !tbaa !5
  store ptr %153, ptr %21, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %22) #6
  %154 = load ptr, ptr %4, align 8, !tbaa !5
  %155 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %154, i32 0, i32 9
  %156 = load ptr, ptr %155, align 8, !tbaa !31
  %157 = load i32, ptr %20, align 4, !tbaa !27
  %158 = sext i32 %157 to i64
  %159 = getelementptr inbounds ptr, ptr %156, i64 %158
  %160 = load ptr, ptr %159, align 8, !tbaa !5
  store ptr %160, ptr %22, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %23) #6
  %161 = load ptr, ptr %4, align 8, !tbaa !5
  %162 = getelementptr inbounds %struct.SparseMatrix_STRUCT, ptr %161, i32 0, i32 7
  %163 = load ptr, ptr %162, align 8, !tbaa !32
  %164 = load i32, ptr %20, align 4, !tbaa !27
  %165 = sext i32 %164 to i64
  %166 = getelementptr inbounds i8, ptr %163, i64 %165
  %167 = load i8, ptr %166, align 1, !tbaa !33
  %168 = sext i8 %167 to i32
  store i32 %168, ptr %23, align 4, !tbaa !27
  call void @llvm.lifetime.start.p0(i64 8, ptr %24) #6
  %169 = load ptr, ptr %8, align 8, !tbaa !5
  %170 = load i32, ptr %20, align 4, !tbaa !27
  %171 = sext i32 %170 to i64
  %172 = getelementptr inbounds ptr, ptr %169, i64 %171
  %173 = load ptr, ptr %172, align 8, !tbaa !5
  %174 = getelementptr inbounds double, ptr %173, i64 0
  %175 = load double, ptr %174, align 8, !tbaa !34
  store double %175, ptr %24, align 8, !tbaa !34
  call void @llvm.lifetime.start.p0(i64 8, ptr %25) #6
  %176 = load ptr, ptr %9, align 8, !tbaa !5
  %177 = load i32, ptr %20, align 4, !tbaa !27
  %178 = sext i32 %177 to i64
  %179 = getelementptr inbounds double, ptr %176, i64 %178
  %180 = load double, ptr %179, align 8, !tbaa !34
  store double %180, ptr %25, align 8, !tbaa !34
  call void @llvm.lifetime.start.p0(i64 4, ptr %26) #6
  store i32 0, ptr %26, align 4, !tbaa !27
  br label %181

181:                                              ; preds = %205, %146
  %182 = load i32, ptr %26, align 4, !tbaa !27
  %183 = load i32, ptr %23, align 4, !tbaa !27
  %184 = icmp slt i32 %182, %183
  br i1 %184, label %186, label %185

185:                                              ; preds = %181
  store i32 11, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %26) #6
  br label %208

186:                                              ; preds = %181
  call void @llvm.lifetime.start.p0(i64 4, ptr %27) #6
  %187 = load ptr, ptr %22, align 8, !tbaa !5
  %188 = load i32, ptr %26, align 4, !tbaa !27
  %189 = sext i32 %188 to i64
  %190 = getelementptr inbounds i32, ptr %187, i64 %189
  %191 = load i32, ptr %190, align 4, !tbaa !27
  store i32 %191, ptr %27, align 4, !tbaa !27
  %192 = load ptr, ptr %21, align 8, !tbaa !5
  %193 = load i32, ptr %26, align 4, !tbaa !27
  %194 = sext i32 %193 to i64
  %195 = getelementptr inbounds double, ptr %192, i64 %194
  %196 = load double, ptr %195, align 8, !tbaa !34
  %197 = load ptr, ptr %10, align 8, !tbaa !5
  %198 = load i32, ptr %27, align 4, !tbaa !27
  %199 = sext i32 %198 to i64
  %200 = getelementptr inbounds double, ptr %197, i64 %199
  %201 = load double, ptr %200, align 8, !tbaa !34
  %202 = load double, ptr %25, align 8, !tbaa !34
  %203 = fneg double %196
  %204 = call double @llvm.fmuladd.f64(double %203, double %201, double %202)
  store double %204, ptr %25, align 8, !tbaa !34
  call void @llvm.lifetime.end.p0(i64 4, ptr %27) #6
  br label %205

205:                                              ; preds = %186
  %206 = load i32, ptr %26, align 4, !tbaa !27
  %207 = add nsw i32 %206, 1
  store i32 %207, ptr %26, align 4, !tbaa !27
  br label %181, !llvm.loop !39

208:                                              ; preds = %185
  %209 = load ptr, ptr %10, align 8, !tbaa !5
  %210 = load i32, ptr %20, align 4, !tbaa !27
  %211 = sext i32 %210 to i64
  %212 = getelementptr inbounds double, ptr %209, i64 %211
  %213 = load double, ptr %212, align 8, !tbaa !34
  %214 = load double, ptr %24, align 8, !tbaa !34
  %215 = load double, ptr %25, align 8, !tbaa !34
  %216 = call double @llvm.fmuladd.f64(double %213, double %214, double %215)
  store double %216, ptr %25, align 8, !tbaa !34
  %217 = load double, ptr %25, align 8, !tbaa !34
  %218 = load double, ptr %24, align 8, !tbaa !34
  %219 = fdiv double %217, %218
  %220 = load ptr, ptr %10, align 8, !tbaa !5
  %221 = load i32, ptr %20, align 4, !tbaa !27
  %222 = sext i32 %221 to i64
  %223 = getelementptr inbounds double, ptr %220, i64 %222
  store double %219, ptr %223, align 8, !tbaa !34
  call void @llvm.lifetime.end.p0(i64 8, ptr %25) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %24) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %23) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %22) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %21) #6
  br label %224

224:                                              ; preds = %208
  %225 = load i32, ptr %20, align 4, !tbaa !27
  %226 = add nsw i32 %225, -1
  store i32 %226, ptr %20, align 4, !tbaa !27
  br label %142, !llvm.loop !40

227:                                              ; preds = %145
  store i32 1, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  ret i32 0
}

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

declare void @_Z12ExchangeHaloRK19SparseMatrix_STRUCTR13Vector_STRUCT(ptr noundef nonnull align 8 dereferenceable(256), ptr noundef nonnull align 8 dereferenceable(24)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { noreturn nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { noreturn nounwind }
attributes #6 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTS13Vector_STRUCT", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !11, i64 36}
!13 = !{!"_ZTS19SparseMatrix_STRUCT", !6, i64 0, !6, i64 8, !14, i64 16, !14, i64 24, !11, i64 32, !11, i64 36, !11, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !15, i64 88, !21, i64 144, !25, i64 168, !25, i64 169, !25, i64 170, !25, i64 171, !6, i64 176, !6, i64 184, !6, i64 192, !11, i64 200, !11, i64 204, !11, i64 208, !6, i64 216, !6, i64 224, !6, i64 232, !6, i64 240, !6, i64 248}
!14 = !{!"long long", !7, i64 0}
!15 = !{!"_ZTSSt13unordered_mapIxiSt4hashIxESt8equal_toIxESaISt4pairIKxiEEE", !16, i64 0}
!16 = !{!"_ZTSSt10_HashtableIxSt4pairIKxiESaIS2_ENSt8__detail10_Select1stESt8equal_toIxESt4hashIxENS4_18_Mod_range_hashingENS4_20_Default_ranged_hashENS4_20_Prime_rehash_policyENS4_17_Hashtable_traitsILb0ELb0ELb1EEEE", !6, i64 0, !17, i64 8, !18, i64 16, !17, i64 24, !19, i64 32, !6, i64 48}
!17 = !{!"long", !7, i64 0}
!18 = !{!"_ZTSNSt8__detail15_Hash_node_baseE", !6, i64 0}
!19 = !{!"_ZTSNSt8__detail20_Prime_rehash_policyE", !20, i64 0, !17, i64 8}
!20 = !{!"float", !7, i64 0}
!21 = !{!"_ZTSSt6vectorIxSaIxEE", !22, i64 0}
!22 = !{!"_ZTSSt12_Vector_baseIxSaIxEE", !23, i64 0}
!23 = !{!"_ZTSNSt12_Vector_baseIxSaIxEE12_Vector_implE", !24, i64 0}
!24 = !{!"_ZTSNSt12_Vector_baseIxSaIxEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!25 = !{!"bool", !7, i64 0}
!26 = !{!13, !11, i64 32}
!27 = !{!11, !11, i64 0}
!28 = !{!13, !6, i64 80}
!29 = !{!10, !6, i64 8}
!30 = !{!13, !6, i64 72}
!31 = !{!13, !6, i64 64}
!32 = !{!13, !6, i64 48}
!33 = !{!7, !7, i64 0}
!34 = !{!35, !35, i64 0}
!35 = !{!"double", !7, i64 0}
!36 = distinct !{!36, !37}
!37 = !{!"llvm.loop.mustprogress"}
!38 = distinct !{!38, !37}
!39 = distinct !{!39, !37}
!40 = distinct !{!40, !37}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [38 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [78 x i8], align 1
@__PRETTY_FUNCTION__._Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_ = external hidden unnamed_addr constant [69 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_(ptr noundef nonnull align 8 dereferenceable(256) %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 36
  %6 = load i32, ptr %5, align 4, !tbaa !11
  %7 = icmp eq i32 %4, %6
  br i1 %7, label %9, label %8

8:                                                ; preds = %3
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 56, ptr noundef nonnull @__PRETTY_FUNCTION__._Z16ComputeSYMGS_refRK19SparseMatrix_STRUCTRK13Vector_STRUCTRS2_) #4
  unreachable

9:                                                ; preds = %3
  tail call void @_Z12ExchangeHaloRK19SparseMatrix_STRUCTR13Vector_STRUCT(ptr noundef nonnull align 8 dereferenceable(256) %0, ptr noundef nonnull align 8 dereferenceable(24) %2)
  %10 = getelementptr inbounds i8, ptr %0, i64 32
  %11 = load i32, ptr %10, align 8, !tbaa !25
  %12 = getelementptr inbounds i8, ptr %0, i64 80
  %13 = load ptr, ptr %12, align 8, !tbaa !26
  %14 = getelementptr inbounds i8, ptr %1, i64 8
  %15 = load ptr, ptr %14, align 8, !tbaa !27
  %16 = getelementptr inbounds i8, ptr %2, i64 8
  %17 = load ptr, ptr %16, align 8, !tbaa !27
  %18 = icmp sgt i32 %11, 0
  br i1 %18, label %.lr.ph79, label %._crit_edge89

.lr.ph79:                                         ; preds = %9
  %19 = getelementptr inbounds i8, ptr %0, i64 72
  %20 = load ptr, ptr %19, align 8, !tbaa !28
  %21 = getelementptr inbounds i8, ptr %0, i64 64
  %22 = load ptr, ptr %21, align 8, !tbaa !29
  %23 = getelementptr inbounds i8, ptr %0, i64 48
  %24 = load ptr, ptr %23, align 8, !tbaa !30
  %wide.trip.count95 = zext nneg i32 %11 to i64
  br label %32

.preheader:                                       ; preds = %._crit_edge
  br i1 %18, label %.lr.ph88, label %._crit_edge89

.lr.ph88:                                         ; preds = %.preheader
  %25 = getelementptr inbounds i8, ptr %0, i64 72
  %26 = load ptr, ptr %25, align 8, !tbaa !28
  %27 = getelementptr inbounds i8, ptr %0, i64 64
  %28 = load ptr, ptr %27, align 8, !tbaa !29
  %29 = getelementptr inbounds i8, ptr %0, i64 48
  %30 = load ptr, ptr %29, align 8, !tbaa !30
  %31 = zext nneg i32 %11 to i64
  br label %77

32:                                               ; preds = %.lr.ph79, %._crit_edge
  %indvars.iv92 = phi i64 [ 0, %.lr.ph79 ], [ %indvars.iv.next93, %._crit_edge ]
  %33 = getelementptr inbounds ptr, ptr %20, i64 %indvars.iv92
  %34 = load ptr, ptr %33, align 8, !tbaa !31
  %35 = getelementptr inbounds ptr, ptr %22, i64 %indvars.iv92
  %36 = load ptr, ptr %35, align 8, !tbaa !31
  %37 = getelementptr inbounds i8, ptr %24, i64 %indvars.iv92
  %38 = load i8, ptr %37, align 1, !tbaa !32
  %39 = getelementptr inbounds ptr, ptr %13, i64 %indvars.iv92
  %40 = load ptr, ptr %39, align 8, !tbaa !31
  %41 = load double, ptr %40, align 8, !tbaa !33
  %42 = getelementptr inbounds double, ptr %15, i64 %indvars.iv92
  %43 = load double, ptr %42, align 8, !tbaa !33
  %44 = icmp sgt i8 %38, 0
  br i1 %44, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %32
  %wide.trip.count = zext nneg i8 %38 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %45 = icmp eq i8 %38, 1
  br i1 %45, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 126
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa107.ph = phi double [ poison, %.lr.ph.preheader ], [ %76, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %.07176.unr = phi double [ %43, %.lr.ph.preheader ], [ %76, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %46 = getelementptr inbounds i32, ptr %36, i64 %indvars.iv.unr
  %47 = load i32, ptr %46, align 4, !tbaa !35
  %48 = getelementptr inbounds double, ptr %34, i64 %indvars.iv.unr
  %49 = load double, ptr %48, align 8, !tbaa !33
  %50 = sext i32 %47 to i64
  %51 = getelementptr inbounds double, ptr %17, i64 %50
  %52 = load double, ptr %51, align 8, !tbaa !33
  %53 = fneg double %49
  %54 = tail call double @llvm.fmuladd.f64(double %53, double %52, double %.07176.unr)
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %32
  %.071.lcssa = phi double [ %43, %32 ], [ %.lcssa107.ph, %._crit_edge.loopexit.unr-lcssa ], [ %54, %.lr.ph.epil ]
  %55 = getelementptr inbounds double, ptr %17, i64 %indvars.iv92
  %56 = load double, ptr %55, align 8, !tbaa !33
  %57 = tail call double @llvm.fmuladd.f64(double %56, double %41, double %.071.lcssa)
  %58 = fdiv double %57, %41
  store double %58, ptr %55, align 8, !tbaa !33
  %indvars.iv.next93 = add nuw nsw i64 %indvars.iv92, 1
  %exitcond96.not = icmp eq i64 %indvars.iv.next93, %wide.trip.count95
  br i1 %exitcond96.not, label %.preheader, label %32, !llvm.loop !36

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %.07176 = phi double [ %43, %.lr.ph.preheader.new ], [ %76, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %59 = getelementptr inbounds i32, ptr %36, i64 %indvars.iv
  %60 = load i32, ptr %59, align 4, !tbaa !35
  %61 = getelementptr inbounds double, ptr %34, i64 %indvars.iv
  %62 = load double, ptr %61, align 8, !tbaa !33
  %63 = sext i32 %60 to i64
  %64 = getelementptr inbounds double, ptr %17, i64 %63
  %65 = load double, ptr %64, align 8, !tbaa !33
  %66 = fneg double %62
  %67 = tail call double @llvm.fmuladd.f64(double %66, double %65, double %.07176)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %68 = getelementptr inbounds i32, ptr %36, i64 %indvars.iv.next
  %69 = load i32, ptr %68, align 4, !tbaa !35
  %70 = getelementptr inbounds double, ptr %34, i64 %indvars.iv.next
  %71 = load double, ptr %70, align 8, !tbaa !33
  %72 = sext i32 %69 to i64
  %73 = getelementptr inbounds double, ptr %17, i64 %72
  %74 = load double, ptr %73, align 8, !tbaa !33
  %75 = fneg double %71
  %76 = tail call double @llvm.fmuladd.f64(double %75, double %74, double %67)
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !38

._crit_edge89:                                    ; preds = %._crit_edge84, %9, %.preheader
  ret i32 0

77:                                               ; preds = %.lr.ph88, %._crit_edge84
  %indvars.iv102 = phi i64 [ %31, %.lr.ph88 ], [ %indvars.iv.next103, %._crit_edge84 ]
  %indvars.iv.next103 = add nsw i64 %indvars.iv102, -1
  %78 = getelementptr inbounds ptr, ptr %26, i64 %indvars.iv.next103
  %79 = load ptr, ptr %78, align 8, !tbaa !31
  %80 = getelementptr inbounds ptr, ptr %28, i64 %indvars.iv.next103
  %81 = load ptr, ptr %80, align 8, !tbaa !31
  %82 = getelementptr inbounds i8, ptr %30, i64 %indvars.iv.next103
  %83 = load i8, ptr %82, align 1, !tbaa !32
  %84 = getelementptr inbounds ptr, ptr %13, i64 %indvars.iv.next103
  %85 = load ptr, ptr %84, align 8, !tbaa !31
  %86 = load double, ptr %85, align 8, !tbaa !33
  %87 = getelementptr inbounds double, ptr %15, i64 %indvars.iv.next103
  %88 = load double, ptr %87, align 8, !tbaa !33
  %89 = icmp sgt i8 %83, 0
  br i1 %89, label %.lr.ph83.preheader, label %._crit_edge84

.lr.ph83.preheader:                               ; preds = %77
  %wide.trip.count100 = zext nneg i8 %83 to i64
  %xtraiter109 = and i64 %wide.trip.count100, 1
  %90 = icmp eq i8 %83, 1
  br i1 %90, label %._crit_edge84.loopexit.unr-lcssa, label %.lr.ph83.preheader.new

.lr.ph83.preheader.new:                           ; preds = %.lr.ph83.preheader
  %unroll_iter112 = and i64 %wide.trip.count100, 126
  br label %.lr.ph83

._crit_edge84.loopexit.unr-lcssa:                 ; preds = %.lr.ph83, %.lr.ph83.preheader
  %.lcssa.ph = phi double [ poison, %.lr.ph83.preheader ], [ %122, %.lr.ph83 ]
  %indvars.iv97.unr = phi i64 [ 0, %.lr.ph83.preheader ], [ %indvars.iv.next98.1, %.lr.ph83 ]
  %.07080.unr = phi double [ %88, %.lr.ph83.preheader ], [ %122, %.lr.ph83 ]
  %lcmp.mod110.not = icmp eq i64 %xtraiter109, 0
  br i1 %lcmp.mod110.not, label %._crit_edge84, label %.lr.ph83.epil

.lr.ph83.epil:                                    ; preds = %._crit_edge84.loopexit.unr-lcssa
  %91 = getelementptr inbounds i32, ptr %81, i64 %indvars.iv97.unr
  %92 = load i32, ptr %91, align 4, !tbaa !35
  %93 = getelementptr inbounds double, ptr %79, i64 %indvars.iv97.unr
  %94 = load double, ptr %93, align 8, !tbaa !33
  %95 = sext i32 %92 to i64
  %96 = getelementptr inbounds double, ptr %17, i64 %95
  %97 = load double, ptr %96, align 8, !tbaa !33
  %98 = fneg double %94
  %99 = tail call double @llvm.fmuladd.f64(double %98, double %97, double %.07080.unr)
  br label %._crit_edge84

._crit_edge84:                                    ; preds = %.lr.ph83.epil, %._crit_edge84.loopexit.unr-lcssa, %77
  %.070.lcssa = phi double [ %88, %77 ], [ %.lcssa.ph, %._crit_edge84.loopexit.unr-lcssa ], [ %99, %.lr.ph83.epil ]
  %100 = getelementptr inbounds double, ptr %17, i64 %indvars.iv.next103
  %101 = load double, ptr %100, align 8, !tbaa !33
  %102 = tail call double @llvm.fmuladd.f64(double %101, double %86, double %.070.lcssa)
  %103 = fdiv double %102, %86
  store double %103, ptr %100, align 8, !tbaa !33
  %104 = icmp sgt i64 %indvars.iv102, 1
  br i1 %104, label %77, label %._crit_edge89, !llvm.loop !39

.lr.ph83:                                         ; preds = %.lr.ph83, %.lr.ph83.preheader.new
  %indvars.iv97 = phi i64 [ 0, %.lr.ph83.preheader.new ], [ %indvars.iv.next98.1, %.lr.ph83 ]
  %.07080 = phi double [ %88, %.lr.ph83.preheader.new ], [ %122, %.lr.ph83 ]
  %niter113 = phi i64 [ 0, %.lr.ph83.preheader.new ], [ %niter113.next.1, %.lr.ph83 ]
  %105 = getelementptr inbounds i32, ptr %81, i64 %indvars.iv97
  %106 = load i32, ptr %105, align 4, !tbaa !35
  %107 = getelementptr inbounds double, ptr %79, i64 %indvars.iv97
  %108 = load double, ptr %107, align 8, !tbaa !33
  %109 = sext i32 %106 to i64
  %110 = getelementptr inbounds double, ptr %17, i64 %109
  %111 = load double, ptr %110, align 8, !tbaa !33
  %112 = fneg double %108
  %113 = tail call double @llvm.fmuladd.f64(double %112, double %111, double %.07080)
  %indvars.iv.next98 = or disjoint i64 %indvars.iv97, 1
  %114 = getelementptr inbounds i32, ptr %81, i64 %indvars.iv.next98
  %115 = load i32, ptr %114, align 4, !tbaa !35
  %116 = getelementptr inbounds double, ptr %79, i64 %indvars.iv.next98
  %117 = load double, ptr %116, align 8, !tbaa !33
  %118 = sext i32 %115 to i64
  %119 = getelementptr inbounds double, ptr %17, i64 %118
  %120 = load double, ptr %119, align 8, !tbaa !33
  %121 = fneg double %117
  %122 = tail call double @llvm.fmuladd.f64(double %121, double %120, double %113)
  %indvars.iv.next98.1 = add nuw nsw i64 %indvars.iv97, 2
  %niter113.next.1 = add i64 %niter113, 2
  %niter113.ncmp.1 = icmp eq i64 %niter113.next.1, %unroll_iter112
  br i1 %niter113.ncmp.1, label %._crit_edge84.loopexit.unr-lcssa, label %.lr.ph83, !llvm.loop !40
}

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

declare void @_Z12ExchangeHaloRK19SparseMatrix_STRUCTR13Vector_STRUCT(ptr noundef nonnull align 8 dereferenceable(256), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #3

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { noreturn nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { noreturn nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !7, i64 0}
!6 = !{!"_ZTS13Vector_STRUCT", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !7, i64 36}
!12 = !{!"_ZTS19SparseMatrix_STRUCT", !10, i64 0, !10, i64 8, !13, i64 16, !13, i64 24, !7, i64 32, !7, i64 36, !7, i64 40, !10, i64 48, !10, i64 56, !10, i64 64, !10, i64 72, !10, i64 80, !14, i64 88, !20, i64 144, !24, i64 168, !24, i64 169, !24, i64 170, !24, i64 171, !10, i64 176, !10, i64 184, !10, i64 192, !7, i64 200, !7, i64 204, !7, i64 208, !10, i64 216, !10, i64 224, !10, i64 232, !10, i64 240, !10, i64 248}
!13 = !{!"long long", !8, i64 0}
!14 = !{!"_ZTSSt13unordered_mapIxiSt4hashIxESt8equal_toIxESaISt4pairIKxiEEE", !15, i64 0}
!15 = !{!"_ZTSSt10_HashtableIxSt4pairIKxiESaIS2_ENSt8__detail10_Select1stESt8equal_toIxESt4hashIxENS4_18_Mod_range_hashingENS4_20_Default_ranged_hashENS4_20_Prime_rehash_policyENS4_17_Hashtable_traitsILb0ELb0ELb1EEEE", !10, i64 0, !16, i64 8, !17, i64 16, !16, i64 24, !18, i64 32, !10, i64 48}
!16 = !{!"long", !8, i64 0}
!17 = !{!"_ZTSNSt8__detail15_Hash_node_baseE", !10, i64 0}
!18 = !{!"_ZTSNSt8__detail20_Prime_rehash_policyE", !19, i64 0, !16, i64 8}
!19 = !{!"float", !8, i64 0}
!20 = !{!"_ZTSSt6vectorIxSaIxEE", !21, i64 0}
!21 = !{!"_ZTSSt12_Vector_baseIxSaIxEE", !22, i64 0}
!22 = !{!"_ZTSNSt12_Vector_baseIxSaIxEE12_Vector_implE", !23, i64 0}
!23 = !{!"_ZTSNSt12_Vector_baseIxSaIxEE17_Vector_impl_dataE", !10, i64 0, !10, i64 8, !10, i64 16}
!24 = !{!"bool", !8, i64 0}
!25 = !{!12, !7, i64 32}
!26 = !{!12, !10, i64 80}
!27 = !{!6, !10, i64 8}
!28 = !{!12, !10, i64 72}
!29 = !{!12, !10, i64 64}
!30 = !{!12, !10, i64 48}
!31 = !{!10, !10, i64 0}
!32 = !{!8, !8, i64 0}
!33 = !{!34, !34, i64 0}
!34 = !{!"double", !8, i64 0}
!35 = !{!7, !7, i64 0}
!36 = distinct !{!36, !37}
!37 = !{!"llvm.loop.mustprogress"}
!38 = distinct !{!38, !37}
!39 = distinct !{!39, !37}
!40 = distinct !{!40, !37}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass