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| author | Chris Lattner <sabre@nondot.org> | 2009-02-03 07:08:57 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-02-03 07:08:57 +0000 |
| commit | 55a683d7f03b0acaf7807545fd7be319498277ff (patch) | |
| tree | 623528275d2cd538adc0e1d2227b9c265b05b87e | |
| parent | 2eafb8b404311ffce66ab170baef0385e79cc2b6 (diff) | |
| download | llvm-55a683d7f03b0acaf7807545fd7be319498277ff.tar.gz llvm-55a683d7f03b0acaf7807545fd7be319498277ff.tar.bz2 llvm-55a683d7f03b0acaf7807545fd7be319498277ff.tar.xz | |
add another case of undefined behavior without crashing, PR3466.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63620 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Transforms/Scalar/ScalarReplAggregates.cpp | 5 | ||||
| -rw-r--r-- | test/Transforms/ScalarRepl/badarray.ll | 9 |
2 files changed, 12 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp index 83572d65da..c67c67a4b6 100644 --- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp +++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp @@ -1431,8 +1431,9 @@ Value *SROA::ConvertUsesOfLoadToScalar(LoadInst *LI, AllocaInst *NewAI, // Finally, unconditionally truncate the integer to the right width. unsigned LIBitWidth = TD->getTypeSizeInBits(LI->getType()); if (LIBitWidth < NTy->getBitWidth()) - NV = new TruncInst(NV, IntegerType::get(LIBitWidth), - LI->getName(), LI); + NV = new TruncInst(NV, IntegerType::get(LIBitWidth), LI->getName(), LI); + else if (LIBitWidth > NTy->getBitWidth()) + NV = new ZExtInst(NV, IntegerType::get(LIBitWidth), LI->getName(), LI); // If the result is an integer, this is a trunc or bitcast. if (isa<IntegerType>(LI->getType())) { diff --git a/test/Transforms/ScalarRepl/badarray.ll b/test/Transforms/ScalarRepl/badarray.ll index acac5a6182..c488486305 100644 --- a/test/Transforms/ScalarRepl/badarray.ll +++ b/test/Transforms/ScalarRepl/badarray.ll @@ -1,4 +1,5 @@ ; RUN: llvm-as < %s | opt -scalarrepl -instcombine | llvm-dis | not grep alloca +; PR3466 define i32 @test() { %X = alloca [4 x i32] ; <[4 x i32]*> [#uses=1] @@ -9,3 +10,11 @@ define i32 @test() { ret i32 %Z } + +define i32 @test2() nounwind { +entry: + %yx2.i = alloca float, align 4 ; <float*> [#uses=1] + %yx26.i = bitcast float* %yx2.i to i64* ; <i64*> [#uses=1] + %0 = load i64* %yx26.i, align 8 ; <i64> [#uses=0] + unreachable +} |