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AVX512: Fix LowerMSCATTER() return value.

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Bug description:
  The bug was discovered when test was compiled with -O0.
  In case scatter result is DAG root , VectorLegalizer failed (assert) due to LowerMSCATTER() return kmask as result.
Change LowerMSCATTER() to return chain as original node do.

Differential Revision: http://reviews.llvm.org/D17331

llvm-svn: 261090
This commit is contained in:
Igor Breger 2016-02-17 14:04:33 +00:00
parent 36020388d8
commit 0cae06de47
2 changed files with 2 additions and 2 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -20551,7 +20551,7 @@ static SDValue LowerMSCATTER(SDValue Op, const X86Subtarget &Subtarget,
NewScatter = DAG.getMaskedScatter(VTs, N->getMemoryVT(), dl, Ops,
N->getMemOperand());
DAG.ReplaceAllUsesWith(Op, SDValue(NewScatter.getNode(), 1));
return SDValue(NewScatter.getNode(), 0);
return SDValue(NewScatter.getNode(), 1);
}
static SDValue LowerMLOAD(SDValue Op, const X86Subtarget &Subtarget,

2
test/CodeGen/X86/masked_gather_scatter.ll
View File

@ -4,7 +4,7 @@
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx512vl -mattr=+avx512dq < %s | FileCheck %s --check-prefix=SKX
; RUN: llc -mtriple=i386-unknown-linux-gnu -mattr=+avx512vl -mattr=+avx512dq < %s | FileCheck %s --check-prefix=SKX_32
; RUN: opt -mtriple=x86_64-apple-darwin -codegenprepare -mcpu=corei7-avx -S < %s | FileCheck %s -check-prefix=SCALAR
; RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu -mcpu=skx < %s -o /dev/null
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"