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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

llvm-svn: 50252
This commit is contained in:
Chris Lattner 2008-04-25 05:13:01 +00:00
parent 1a6268f776
commit 8c9f6c929a
2 changed files with 19 additions and 1 deletions
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5
lib/Target/X86/X86ISelDAGToDAG.cpp
View File

@ -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
View File

@ -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