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Diffstat (limited to 'test/Transforms/GlobalOpt/2009-11-16-MallocSingleStoreToGlobalVar.ll')
| -rw-r--r-- | test/Transforms/GlobalOpt/2009-11-16-MallocSingleStoreToGlobalVar.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/Transforms/GlobalOpt/2009-11-16-MallocSingleStoreToGlobalVar.ll b/test/Transforms/GlobalOpt/2009-11-16-MallocSingleStoreToGlobalVar.ll new file mode 100644 index 0000000..c43565a --- /dev/null +++ b/test/Transforms/GlobalOpt/2009-11-16-MallocSingleStoreToGlobalVar.ll @@ -0,0 +1,30 @@ +; Test ensures that non-optimizable array mallocs are not optimized; specifically +; GlobalOpt was treating a non-optimizable array malloc as a non-array malloc +; and optimizing the global object that the malloc was stored to as a single +; element global. The global object @TOP in this test should not be optimized. +; RUN: opt < %s -globalopt -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" +target triple = "x86_64-apple-darwin10.0" + +@TOP = internal global i64* null ; <i64**> [#uses=2] +; CHECK: @TOP = internal global i64* null +@channelColumns = internal global i64 0 ; <i64*> [#uses=2] + +; Derived from @DescribeChannel() in yacr2 +define void @test() nounwind ssp { + store i64 2335, i64* @channelColumns, align 8 + %1 = load i64* @channelColumns, align 8 ; <i64> [#uses=1] + %2 = shl i64 %1, 3 ; <i64> [#uses=1] + %3 = add i64 %2, 8 ; <i64> [#uses=1] + %4 = call noalias i8* @malloc(i64 %3) nounwind ; <i8*> [#uses=1] +; CHECK: call noalias i8* @malloc + %5 = bitcast i8* %4 to i64* ; <i64*> [#uses=1] + store i64* %5, i64** @TOP, align 8 + %6 = load i64** @TOP, align 8 ; <i64*> [#uses=1] + %7 = getelementptr inbounds i64* %6, i64 13 ; <i64*> [#uses=1] + store i64 0, i64* %7, align 8 + ret void +} + +declare noalias i8* @malloc(i64) nounwind |