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[x86] add test for false dependency with AVX; NFC

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Goes with D67363

llvm-svn: 371551
This commit is contained in:
Sanjay Patel 2019-09-10 20:04:10 +00:00
parent 740ba98eb1
commit b5245bbc48
1 changed files with 15 additions and 0 deletions
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15
test/CodeGen/X86/stack-folding-fp-avx1.ll
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@ -2868,6 +2868,21 @@ define double @stack_fold_roundsd(double %a0) optsize {
%2 = call double @llvm.floor.f64(double %a0)
ret double %2
}
define double @stack_fold_roundsd_minsize(double %a0) minsize {
; CHECK-LABEL: stack_fold_roundsd_minsize:
; CHECK: # %bb.0:
; CHECK-NEXT: vmovsd %xmm0, {{[-0-9]+}}(%r{{[sb]}}p) # 8-byte Spill
; CHECK-NEXT: #APP
; CHECK-NEXT: nop
; CHECK-NEXT: #NO_APP
; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
; CHECK-NEXT: vroundsd $9, {{[-0-9]+}}(%r{{[sb]}}p), %xmm0, %xmm0 # 8-byte Folded Reload
; CHECK-NEXT: retq
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{flags}"()
%2 = call double @llvm.floor.f64(double %a0)
ret double %2
}
declare double @llvm.floor.f64(double) nounwind readnone
define <2 x double> @stack_fold_roundsd_int(<2 x double> %a0, <2 x double> %a1) optsize {