diff options
| -rw-r--r-- | llvm/lib/Transforms/IPO/Attributor.cpp | 3 | ||||
| -rw-r--r-- | llvm/test/Transforms/Attributor/align.ll | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp index 2655930aec5..46664d62769 100644 --- a/llvm/lib/Transforms/IPO/Attributor.cpp +++ b/llvm/lib/Transforms/IPO/Attributor.cpp @@ -3466,7 +3466,8 @@ static unsigned int getKnownAlignForUse(Attributor &A, // We need to follow common pointer manipulation uses to the accesses they // feed into. if (isa<CastInst>(I)) { - TrackUse = true; + // Follow all but ptr2int casts. + TrackUse = !isa<PtrToIntInst>(I); return 0; } if (auto *GEP = dyn_cast<GetElementPtrInst>(I)) { diff --git a/llvm/test/Transforms/Attributor/align.ll b/llvm/test/Transforms/Attributor/align.ll index 6f955be467b..f01ae28431d 100644 --- a/llvm/test/Transforms/Attributor/align.ll +++ b/llvm/test/Transforms/Attributor/align.ll @@ -398,5 +398,15 @@ define void @test12-6(i32* align 4 %p) { ret void } +; Don't crash on ptr2int/int2ptr uses. +define i64 @ptr2int(i32* %p) { + %p2i = ptrtoint i32* %p to i64 + ret i64 %p2i +} +define i64* @int2ptr(i64 %i) { + %i2p = inttoptr i64 %i to i64* + ret i64* %i2p +} + attributes #0 = { nounwind uwtable noinline } attributes #1 = { uwtable noinline } |
