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Loosen up an assertion to allow intrinsics. I really have no

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idea what this code (findNonImmUse) does, so I'm only guessing 
that this is the right thing.  It would be really really nice
if this had comments and perhaps switched to SmallPtrSet
(hint hint) :)

This fixes rdar://5886601, a crash on gcc.target/i386/sse4_1-pblendw.c


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50252 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-04-25 05:13:01 +00:00
parent eede65ce6c
commit 25453ea49e
2 changed files with 19 additions and 1 deletions
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5
lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -252,7 +252,10 @@ static void findNonImmUse(SDNode *Use, SDNode* Def, SDNode *ImmedUse,
continue; // Immediate use is ok.
if (Use == Root) {
assert(Use->getOpcode() == ISD::STORE ||
Use->getOpcode() == X86ISD::CMP);
Use->getOpcode() == X86ISD::CMP ||
Use->getOpcode() == ISD::INTRINSIC_WO_CHAIN ||
Use->getOpcode() == ISD::INTRINSIC_W_CHAIN ||
Use->getOpcode() == ISD::INTRINSIC_VOID);
continue;
}
found = true;

15
test/CodeGen/X86/2008-04-24-pblendw-fold-crash.ll Normal file
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@ -0,0 +1,15 @@
; RUN: llvm-as < %s | llc -mattr=+sse41
; rdar://5886601
; gcc testsuite: gcc.target/i386/sse4_1-pblendw.c
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin8"
define i32 @main() nounwind {
entry:
%tmp122 = load <2 x i64>* null, align 16 ; <<2 x i64>> [#uses=1]
%tmp126 = bitcast <2 x i64> %tmp122 to <8 x i16> ; <<8 x i16>> [#uses=1]
%tmp129 = call <8 x i16> @llvm.x86.sse41.pblendw( <8 x i16> zeroinitializer, <8 x i16> %tmp126, i32 2 ) nounwind ; <<8 x i16>> [#uses=0]
ret i32 0
}
declare <8 x i16> @llvm.x86.sse41.pblendw(<8 x i16>, <8 x i16>, i32) nounwind