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X86 cost model: Exit before calling getSimpleVT on non-simple VTs

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getSimpleVT can only handle simple value types.

radar://13676022

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179714 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Arnold Schwaighofer 2013-04-17 20:04:53 +00:00
parent d58b50b99b
commit 9c63f0d687
2 changed files with 10 additions and 0 deletions
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4
lib/Target/X86/X86TargetTransformInfo.cpp
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@ -371,6 +371,10 @@ unsigned X86TTI::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) const {
EVT SrcTy = TLI->getValueType(Src);
EVT DstTy = TLI->getValueType(Dst);
// The function getSimpleVT only handles simple value types.
if (!SrcTy.isSimple() || !DstTy.isSimple())
return TargetTransformInfo::getCastInstrCost(Opcode, Dst, Src);
static const TypeConversionCostTblEntry<MVT> AVXConversionTbl[] = {
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 1 },

6
test/Analysis/CostModel/X86/uitofp.ll
View File

@ -1,6 +1,11 @@
; RUN: llc -mtriple=x86_64-apple-darwin -mcpu=core2 < %s | FileCheck --check-prefix=SSE2-CODEGEN %s
; RUN: opt -mtriple=x86_64-apple-darwin -mcpu=core2 -cost-model -analyze < %s | FileCheck --check-prefix=SSE2 %s
; In X86TargetTransformInfo::getCastInstrCost we have code that depends on
; getSimpleVT on a value type. On AVX2 we execute this code. Make sure we exit
; early if the type is not a simple value type before we call this function.
; RUN: opt -mtriple=x86_64-apple-darwin -mcpu=core-avx2 -cost-model -analyze < %s
define <2 x double> @uitofpv2i8v2double(<2 x i8> %a) {
; SSE2: uitofpv2i8v2double
; SSE2: cost of 20 {{.*}} uitofp
@ -360,3 +365,4 @@ define <32 x float> @uitofpv32i64v32float(<32 x i64> %a) {
%1 = uitofp <32 x i64> %a to <32 x float>
ret <32 x float> %1
}