AsmParser: Store MacroLikeBodies on the side so they don't get leaked.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187702 91177308-0d34-0410-b5e6-96231b3b80d8
X86: correct tail return address calculation

Due to the weird and wondeful usual arithmetic conversions, some
calculations involving negative values were getting performed in
uint32_t and then promoted to int64_t, which is really not a good
idea.

Patch by Katsuhiro Ueno.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187703 91177308-0d34-0410-b5e6-96231b3b80d8
X86: specify CPU on new test to fix atom buildbot

Apparently Atoms use lea for stack adjustment, which we weren't
looking for.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187704 91177308-0d34-0410-b5e6-96231b3b80d8
AVX-512 set: added VEXTRACTPS instruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187705 91177308-0d34-0410-b5e6-96231b3b80d8
X86: Turn fp selects into mask operations.

double test(double a, double b, double c, double d) { return a<b ? c : d; }

before:
_test:
	ucomisd	%xmm0, %xmm1
	ja	LBB0_2
	movaps	%xmm3, %xmm2
LBB0_2:
	movaps	%xmm2, %xmm0

after:
_test:
	cmpltsd	%xmm1, %xmm0
	andpd	%xmm0, %xmm2
	andnpd	%xmm3, %xmm0
	orpd	%xmm2, %xmm0

Small speedup on Benchmarks/SmallPT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187706 91177308-0d34-0410-b5e6-96231b3b80d8