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llvm-project/llvm/test/CodeGen/X86/pr45067.ll

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[X86] Don't add DELETED_NODES to DAG combine worklist after calling SimplifyDemandedBits/SimplifyDemandedVectorElts. These AddToWorklist calls were added in 84cd968f75bbd6e0fbabecc29d2c1090263adec7. It's possible the SimplifyDemandedBits/SimplifyDemandedVectorElts triggered CSE that deleted N. Detect that and avoid adding N to the worklist. Fixes PR45067.
2020-03-01 16:01:38 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=skylake | FileCheck %s
@global = external global i32, align 4
define void @foo(<8 x i32>* %x, <8 x i1> %y) {
; CHECK-LABEL: foo:
; CHECK: ## %bb.0:
[SelectionDAGBuilder][CGP][X86] Move some of SDB's gather/scatter uniform base handling to CGP. I've always found the "findValue" a little odd and inconsistent with other things in SDB. This simplfifies the code in SDB to just handle a splat constant address or a 2 operand GEP in the same BB. This removes the need for "findValue" since the operands to the GEP are guaranteed to be available. The splat constant handling is new, but was needed to avoid regressions due to constant folding combining GEPs created in CGP. CGP is now responsible for canonicalizing gather/scatters into this form. The pattern I'm using for scalarizing, a scalar GEP followed by a GEP with an all zeroes index, seems to be subject to constant folding that the insertelement+shufflevector was not. Differential Revision: https://reviews.llvm.org/D76947
2020-04-17 08:03:16 +08:00
; CHECK-NEXT: vpcmpeqd %ymm1, %ymm1, %ymm1
; CHECK-NEXT: vpxor %xmm2, %xmm2, %xmm2
; CHECK-NEXT: movq _global@{{.*}}(%rip), %rax
; CHECK-NEXT: vpgatherdd %ymm1, (%rax,%ymm2), %ymm3
[X86] Don't add DELETED_NODES to DAG combine worklist after calling SimplifyDemandedBits/SimplifyDemandedVectorElts. These AddToWorklist calls were added in 84cd968f75bbd6e0fbabecc29d2c1090263adec7. It's possible the SimplifyDemandedBits/SimplifyDemandedVectorElts triggered CSE that deleted N. Detect that and avoid adding N to the worklist. Fixes PR45067.
2020-03-01 16:01:38 +08:00
; CHECK-NEXT: vpmovzxwd {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero
; CHECK-NEXT: vpslld $31, %ymm0, %ymm0
[SelectionDAGBuilder][CGP][X86] Move some of SDB's gather/scatter uniform base handling to CGP. I've always found the "findValue" a little odd and inconsistent with other things in SDB. This simplfifies the code in SDB to just handle a splat constant address or a 2 operand GEP in the same BB. This removes the need for "findValue" since the operands to the GEP are guaranteed to be available. The splat constant handling is new, but was needed to avoid regressions due to constant folding combining GEPs created in CGP. CGP is now responsible for canonicalizing gather/scatters into this form. The pattern I'm using for scalarizing, a scalar GEP followed by a GEP with an all zeroes index, seems to be subject to constant folding that the insertelement+shufflevector was not. Differential Revision: https://reviews.llvm.org/D76947
2020-04-17 08:03:16 +08:00
; CHECK-NEXT: vpmaskmovd %ymm3, %ymm0, (%rdi)
[X86] Don't add DELETED_NODES to DAG combine worklist after calling SimplifyDemandedBits/SimplifyDemandedVectorElts. These AddToWorklist calls were added in 84cd968f75bbd6e0fbabecc29d2c1090263adec7. It's possible the SimplifyDemandedBits/SimplifyDemandedVectorElts triggered CSE that deleted N. Detect that and avoid adding N to the worklist. Fixes PR45067.
2020-03-01 16:01:38 +08:00
; CHECK-NEXT: ud2
%tmp = call <8 x i32> @llvm.masked.gather.v8i32.v8p0i32(<8 x i32*> <i32* @global, i32* @global, i32* @global, i32* @global, i32* @global, i32* @global, i32* @global, i32* @global>, i32 4, <8 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <8 x i32> undef)
call void @llvm.masked.store.v8i32.p0v8i32(<8 x i32> %tmp, <8 x i32>* %x, i32 4, <8 x i1> %y)
unreachable
}
declare <8 x i32> @llvm.masked.gather.v8i32.v8p0i32(<8 x i32*>, i32, <8 x i1>, <8 x i32>)
declare void @llvm.masked.store.v8i32.p0v8i32(<8 x i32>, <8 x i32>*, i32, <8 x i1>)