text: ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
  ; RUN: opt < %s -reassociate -S | FileCheck %s
  
  ; PR37098 - https://bugs.llvm.org/show_bug.cgi?id=37098
  ; In all positive tests, we should reassociate binops
  ; to allow more factoring folds.
  
  ; There are 5 associative integer binops *
  ;           13 integer binops *
  ;           4 operand commutes =
  ;           260 potential variations of this fold
  ; for integer binops. There are another 40 for FP.
  ; Mix the commutation options to provide coverage using less tests.
  
  define i8 @and_shl(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @and_shl(
  ; CHECK-NEXT:    [[SX:%.*]] = shl i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = shl i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = and i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = and i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = shl i8 %x, %shamt
    %sy = shl i8 %y, %shamt
    %a = and i8 %sx, %z
    %r = and i8 %sy, %a
    ret i8 %r
  }
  
  define i8 @or_shl(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @or_shl(
  ; CHECK-NEXT:    [[SX:%.*]] = shl i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = shl i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = or i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = or i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = shl i8 %x, %shamt
    %sy = shl i8 %y, %shamt
    %a = or i8 %sx, %z
    %r = or i8 %a, %sy
    ret i8 %r
  }
  
  define i8 @xor_shl(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @xor_shl(
  ; CHECK-NEXT:    [[SX:%.*]] = shl i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = shl i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = xor i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = xor i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = shl i8 %x, %shamt
    %sy = shl i8 %y, %shamt
    %a = xor i8 %z, %sx
    %r = xor i8 %a, %sy
    ret i8 %r
  }
  
  define i8 @and_lshr(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @and_lshr(
  ; CHECK-NEXT:    [[SX:%.*]] = lshr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = lshr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = and i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = and i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = lshr i8 %x, %shamt
    %sy = lshr i8 %y, %shamt
    %a = and i8 %z, %sx
    %r = and i8 %sy, %a
    ret i8 %r
  }
  
  define i8 @or_lshr(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @or_lshr(
  ; CHECK-NEXT:    [[SX:%.*]] = lshr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = lshr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = or i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = or i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = lshr i8 %x, %shamt
    %sy = lshr i8 %y, %shamt
    %a = or i8 %sx, %z
    %r = or i8 %sy, %a
    ret i8 %r
  }
  
  define i8 @xor_lshr(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @xor_lshr(
  ; CHECK-NEXT:    [[SX:%.*]] = lshr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = lshr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = xor i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = xor i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = lshr i8 %x, %shamt
    %sy = lshr i8 %y, %shamt
    %a = xor i8 %sx, %z
    %r = xor i8 %a, %sy
    ret i8 %r
  }
  
  define i8 @and_ashr(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @and_ashr(
  ; CHECK-NEXT:    [[SX:%.*]] = ashr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = ashr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = and i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = and i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = ashr i8 %x, %shamt
    %sy = ashr i8 %y, %shamt
    %a = and i8 %z, %sx
    %r = and i8 %a, %sy
    ret i8 %r
  }
  
  define i8 @or_ashr(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @or_ashr(
  ; CHECK-NEXT:    [[SX:%.*]] = ashr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = ashr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = or i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = or i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = ashr i8 %x, %shamt
    %sy = ashr i8 %y, %shamt
    %a = or i8 %z, %sx
    %r = or i8 %sy, %a
    ret i8 %r
  }
  
  ; Vectors work too.
  
  define <2 x i8> @xor_ashr(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z, <2 x i8> %shamt) {
  ; CHECK-LABEL: @xor_ashr(
  ; CHECK-NEXT:    [[SX:%.*]] = ashr <2 x i8> [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = ashr <2 x i8> [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = xor <2 x i8> [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = xor <2 x i8> [[A]], [[SY]]
  ; CHECK-NEXT:    ret <2 x i8> [[R]]
  ;
    %sx = ashr <2 x i8> %x, %shamt
    %sy = ashr <2 x i8> %y, %shamt
    %a = xor <2 x i8> %sx, %z
    %r = xor <2 x i8> %a, %sy
    ret <2 x i8> %r
  }
  
  ; Negative test - different logic ops
  
  define i8 @or_and_shl(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @or_and_shl(
  ; CHECK-NEXT:    [[SX:%.*]] = shl i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = shl i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = or i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = and i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = shl i8 %x, %shamt
    %sy = shl i8 %y, %shamt
    %a = or i8 %sx, %z
    %r = and i8 %sy, %a
    ret i8 %r
  }
  
  ; Negative test - different shift ops
  
  define i8 @or_lshr_shl(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @or_lshr_shl(
  ; CHECK-NEXT:    [[SX:%.*]] = lshr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = shl i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = or i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = or i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = lshr i8 %x, %shamt
    %sy = shl i8 %y, %shamt
    %a = or i8 %sx, %z
    %r = or i8 %a, %sy
    ret i8 %r
  }
  
  ; Negative test - multi-use
  
  define i8 @xor_lshr_multiuse(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @xor_lshr_multiuse(
  ; CHECK-NEXT:    [[SX:%.*]] = lshr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = lshr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[A:%.*]] = xor i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = xor i8 [[A]], [[SY]]
  ; CHECK-NEXT:    [[R2:%.*]] = sdiv i8 [[A]], [[R]]
  ; CHECK-NEXT:    ret i8 [[R2]]
  ;
    %sx = lshr i8 %x, %shamt
    %sy = lshr i8 %y, %shamt
    %a = xor i8 %sx, %z
    %r = xor i8 %a, %sy
    %r2 = sdiv i8 %a, %r
    ret i8 %r2
  }
  
  ; Math ops work too. Change instruction positions too to verify placement.
  
  define i8 @add_lshr(i8 %x, i8 %y, i8 %z, i8 %shamt) {
  ; CHECK-LABEL: @add_lshr(
  ; CHECK-NEXT:    [[SX:%.*]] = lshr i8 [[X:%.*]], [[SHAMT:%.*]]
  ; CHECK-NEXT:    [[A:%.*]] = add i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = lshr i8 [[Y:%.*]], [[SHAMT]]
  ; CHECK-NEXT:    [[R:%.*]] = add i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = lshr i8 %x, %shamt
    %a = add i8 %sx, %z
    %sy = lshr i8 %y, %shamt
    %r = add i8 %a, %sy
    ret i8 %r
  }
  
  ; Make sure wrapping flags are cleared.
  
  define i8 @mul_sub(i8 %x, i8 %y, i8 %z, i8 %m) {
  ; CHECK-LABEL: @mul_sub(
  ; CHECK-NEXT:    [[SX:%.*]] = sub i8 [[X:%.*]], [[M:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = sub i8 [[Y:%.*]], [[M]]
  ; CHECK-NEXT:    [[A:%.*]] = mul nsw i8 [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = mul nuw i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = sub i8 %x, %m
    %sy = sub i8 %y, %m
    %a = mul nsw i8 %sx, %z
    %r = mul nuw i8 %a, %sy
    ret i8 %r
  }
  
  define i8 @add_mul(i8 %x, i8 %y, i8 %z, i8 %m) {
  ; CHECK-LABEL: @add_mul(
  ; CHECK-NEXT:    [[SX:%.*]] = mul nuw i8 [[X:%.*]], 42
  ; CHECK-NEXT:    [[A:%.*]] = add nuw i8 [[Z:%.*]], [[SX]]
  ; CHECK-NEXT:    [[SY:%.*]] = mul nsw i8 [[M:%.*]], [[Y:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = add nsw i8 [[A]], [[SY]]
  ; CHECK-NEXT:    ret i8 [[R]]
  ;
    %sx = mul nuw i8 %x, 42
    %a = add nuw i8 %sx, %z
    %sy = mul nsw i8 %y, %m
    %r = add nsw i8 %sy, %a
    ret i8 %r
  }
  
  ; Floating-point works too if it's not strict.
  ; TODO: These should not require the full 'fast' FMF.
  
  define float @fadd_fmul(float %x, float %y, float %z, float %m) {
  ; CHECK-LABEL: @fadd_fmul(
  ; CHECK-NEXT:    [[SX:%.*]] = fmul float [[X:%.*]], [[M:%.*]]
  ; CHECK-NEXT:    [[A:%.*]] = fadd fast float [[SX]], [[Z:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = fmul float [[Y:%.*]], [[M]]
  ; CHECK-NEXT:    [[R:%.*]] = fadd fast float [[A]], [[SY]]
  ; CHECK-NEXT:    ret float [[R]]
  ;
    %sx = fmul float %x, %m
    %a = fadd fast float %sx, %z
    %sy = fmul float %y, %m
    %r = fadd fast float %sy, %a
    ret float %r
  }
  
  define float @fmul_fdiv(float %x, float %y, float %z, float %m) {
  ; CHECK-LABEL: @fmul_fdiv(
  ; CHECK-NEXT:    [[SX:%.*]] = fdiv float [[X:%.*]], [[M:%.*]]
  ; CHECK-NEXT:    [[SY:%.*]] = fdiv float [[Y:%.*]], 4.200000e+01
  ; CHECK-NEXT:    [[A:%.*]] = fmul fast float [[SY]], [[Z:%.*]]
  ; CHECK-NEXT:    [[R:%.*]] = fmul fast float [[A]], [[SX]]
  ; CHECK-NEXT:    ret float [[R]]
  ;
    %sx = fdiv float %x, %m
    %sy = fdiv float %y, 42.0
    %a = fmul fast float %z, %sx
    %r = fmul fast float %sy, %a
    ret float %r
  }
  
  ; Verify that debug info for modified instructions gets discarded (references become undef).
  
  define i32 @and_shl_dbg(i32 %x, i32 %y, i32 %z, i32 %shamt) {
  ; CHECK-LABEL: @and_shl_dbg(
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[X:%.*]], metadata !7, metadata !DIExpression()), !dbg !20
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[Y:%.*]], metadata !13, metadata !DIExpression()), !dbg !21
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[Z:%.*]], metadata !14, metadata !DIExpression()), !dbg !22
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[SHAMT:%.*]], metadata !15, metadata !DIExpression()), !dbg !23
  ; CHECK-NEXT:    [[SHL:%.*]] = shl i32 [[X]], [[SHAMT]], !dbg !24
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[SHL]], metadata !16, metadata !DIExpression()), !dbg !25
  ; CHECK-NEXT:    [[SHL1:%.*]] = shl i32 [[Y]], [[SHAMT]], !dbg !26
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[SHL1]], metadata !17, metadata !DIExpression()), !dbg !27
  ; CHECK-NEXT:    [[AND:%.*]] = and i32 [[SHL]], [[Z]], !dbg !28
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[AND]], metadata !18, metadata !DIExpression()), !dbg !29
  ; CHECK-NEXT:    [[AND2:%.*]] = and i32 [[AND]], [[SHL1]], !dbg !30
  ; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[AND2]], metadata !19, metadata !DIExpression()), !dbg !31
  ; CHECK-NEXT:    ret i32 [[AND2]], !dbg !32
  ;
    call void @llvm.dbg.value(metadata i32 %x, metadata !13, metadata !DIExpression()), !dbg !21
    call void @llvm.dbg.value(metadata i32 %y, metadata !14, metadata !DIExpression()), !dbg !22
    call void @llvm.dbg.value(metadata i32 %z, metadata !15, metadata !DIExpression()), !dbg !23
    call void @llvm.dbg.value(metadata i32 %shamt, metadata !16, metadata !DIExpression()), !dbg !24
    %shl = shl i32 %x, %shamt, !dbg !25
    call void @llvm.dbg.value(metadata i32 %shl, metadata !17, metadata !DIExpression()), !dbg !26
    %shl1 = shl i32 %y, %shamt, !dbg !27
    call void @llvm.dbg.value(metadata i32 %shl1, metadata !18, metadata !DIExpression()), !dbg !28
    %and = and i32 %shl, %z, !dbg !29
    call void @llvm.dbg.value(metadata i32 %and, metadata !19, metadata !DIExpression()), !dbg !30
    %and2 = and i32 %and, %shl1, !dbg !31
    call void @llvm.dbg.value(metadata i32 %and2, metadata !20, metadata !DIExpression()), !dbg !32
    ret i32 %and2, !dbg !33
  }
  
  declare void @llvm.dbg.value(metadata, metadata, metadata)
  
  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!3, !4, !5, !6}
  
  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 331069)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
  !1 = !DIFile(filename: "ass.c", directory: "/Users/spatel/myllvm/release/bin")
  !2 = !{}
  !3 = !{i32 2, !"Dwarf Version", i32 4}
  !4 = !{i32 2, !"Debug Info Version", i32 3}
  !5 = !{i32 1, !"wchar_size", i32 4}
  !6 = !{i32 7, !"PIC Level", i32 2}
  !7 = !{!"clang version 7.0.0 (trunk 331069)"}
  !8 = distinct !DISubprogram(name: "and_shl_dbg", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
  !9 = !DISubroutineType(types: !10)
  !10 = !{!11, !11, !11, !11, !11}
  !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
  !12 = !{!13, !14, !15, !16, !17, !18, !19, !20}
  !13 = !DILocalVariable(name: "x", arg: 1, scope: !8, file: !1, line: 1, type: !11)
  !14 = !DILocalVariable(name: "y", arg: 2, scope: !8, file: !1, line: 1, type: !11)
  !15 = !DILocalVariable(name: "z", arg: 3, scope: !8, file: !1, line: 1, type: !11)
  !16 = !DILocalVariable(name: "shamt", arg: 4, scope: !8, file: !1, line: 1, type: !11)
  !17 = !DILocalVariable(name: "sx", scope: !8, file: !1, line: 2, type: !11)
  !18 = !DILocalVariable(name: "sy", scope: !8, file: !1, line: 3, type: !11)
  !19 = !DILocalVariable(name: "a", scope: !8, file: !1, line: 4, type: !11)
  !20 = !DILocalVariable(name: "r", scope: !8, file: !1, line: 5, type: !11)
  !21 = !DILocation(line: 1, column: 21, scope: !8)
  !22 = !DILocation(line: 1, column: 28, scope: !8)
  !23 = !DILocation(line: 1, column: 35, scope: !8)
  !24 = !DILocation(line: 1, column: 42, scope: !8)
  !25 = !DILocation(line: 2, column: 14, scope: !8)
  !26 = !DILocation(line: 2, column: 7, scope: !8)
  !27 = !DILocation(line: 3, column: 14, scope: !8)
  !28 = !DILocation(line: 3, column: 7, scope: !8)
  !29 = !DILocation(line: 4, column: 14, scope: !8)
  !30 = !DILocation(line: 4, column: 7, scope: !8)
  !31 = !DILocation(line: 5, column: 14, scope: !8)
  !32 = !DILocation(line: 5, column: 7, scope: !8)
  !33 = !DILocation(line: 6, column: 3, scope: !8)
  
  