From ddf07067bc7ec9897a17352c2db23fb4d1a55db4 Mon Sep 17 00:00:00 2001 From: Pawel Wodnicki Date: Thu, 22 Nov 2012 00:43:18 +0000 Subject: Merging r168280: into 3.2 release branch. Don't try to calculate the alignment of an unsigned type. Fixes PR14371! git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_32@168480 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../InstCombine/InstCombineLoadStoreAlloca.cpp | 3 ++- test/Transforms/InstCombine/alloca.ll | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp b/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp index 4ab5b6e4a0..4d106fc188 100644 --- a/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp +++ b/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp @@ -164,7 +164,8 @@ static unsigned getPointeeAlignment(Value *V, const DataLayout &TD) { return TD.getPreferredAlignment(GV); if (PointerType *PT = dyn_cast(V->getType())) - return TD.getABITypeAlignment(PT->getElementType()); + if (PT->getElementType()->isSized()) + return TD.getABITypeAlignment(PT->getElementType()); return 0; } diff --git a/test/Transforms/InstCombine/alloca.ll b/test/Transforms/InstCombine/alloca.ll index 50e03479f6..68a671cec8 100644 --- a/test/Transforms/InstCombine/alloca.ll +++ b/test/Transforms/InstCombine/alloca.ll @@ -94,3 +94,19 @@ entry: tail call void @f(i32* %b) ret void } + +; PR14371 +%opaque_type = type opaque +%real_type = type { { i32, i32* } } + +@opaque_global = external constant %opaque_type, align 4 + +define void @test7() { +entry: + %0 = alloca %real_type, align 4 + %1 = bitcast %real_type* %0 to i8* + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %1, i8* bitcast (%opaque_type* @opaque_global to i8*), i32 8, i32 1, i1 false) + ret void +} + +declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind -- cgit v1.2.3