RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-19 03:38:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

fix PR5673 by being more careful about pointers to functions.

Browse Source 
llvm-svn: 90369
This commit is contained in:
Chris Lattner 2009-12-03 01:05:45 +00:00
parent 09df97d257
commit 851aea6ce2
2 changed files with 21 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
lib/Analysis/ConstantFolding.cpp
View File

@ -569,9 +569,16 @@ static Constant *SymbolicallyEvaluateGEP(Constant *const *Ops, unsigned NumOps,
SmallVector<Constant*, 32> NewIdxs; SmallVector<Constant*, 32> NewIdxs;
do { do {
if (const SequentialType *ATy = dyn_cast<SequentialType>(Ty)) { if (const SequentialType *ATy = dyn_cast<SequentialType>(Ty)) {
// The only pointer indexing we'll do is on the first index of the GEP. if (isa<PointerType>(ATy)) {
if (isa<PointerType>(ATy) && !NewIdxs.empty()) // The only pointer indexing we'll do is on the first index of the GEP.
break; if (!NewIdxs.empty())
break;
// Only handle pointers to sized types, not pointers to functions.
if (!ATy->getElementType()->isSized())
return 0;
}
// Determine which element of the array the offset points into. // Determine which element of the array the offset points into.
APInt ElemSize(BitWidth, TD->getTypeAllocSize(ATy->getElementType())); APInt ElemSize(BitWidth, TD->getTypeAllocSize(ATy->getElementType()));
if (ElemSize == 0) if (ElemSize == 0)

11
test/Transforms/InstCombine/crash.ll
View File

@ -137,3 +137,14 @@ define arm_apcscc void @test5() {
exit: exit:
ret void ret void
} }
; PR5673
@test6g = external global i32*
define arm_aapcs_vfpcc i32 @test6(i32 %argc, i8** %argv) nounwind {
entry:
store i32* getelementptr (i32* bitcast (i32 (i32, i8**)* @test6 to i32*), i32 -2048), i32** @test6g, align 4
unreachable
}