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| author | Nick Lewycky <nicholas@mxc.ca> | 2013-02-14 03:23:37 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2013-02-14 03:23:37 +0000 |
| commit | 06417743cf04a38d4c016ca74848e164570e6903 (patch) | |
| tree | 203a262149e1092c89ba78eebaa485674c6211b0 /llvm/test | |
| parent | 0ac5709027bd71230053115af79f7a426d4862ee (diff) | |
| download | bcm5719-llvm-06417743cf04a38d4c016ca74848e164570e6903.tar.gz bcm5719-llvm-06417743cf04a38d4c016ca74848e164570e6903.zip | |
Teach the DataLayout aware constant folder to be much more aggressive towards
'and' instructions. This is a pattern that shows up a lot in ubsan binaries.
llvm-svn: 175128
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/constant-expr-datalayout.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/constant-expr-datalayout.ll b/llvm/test/Transforms/InstCombine/constant-expr-datalayout.ll new file mode 100644 index 00000000000..9a72c77afdb --- /dev/null +++ b/llvm/test/Transforms/InstCombine/constant-expr-datalayout.ll @@ -0,0 +1,12 @@ +; RUN: opt -instcombine %s -S -o - | 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-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +%test1.struct = type { i32, i32 } +@test1.aligned_glbl = global %test1.struct zeroinitializer, align 4 +define void @test1(i64 *%ptr) { + store i64 and (i64 ptrtoint (i32* getelementptr (%test1.struct* @test1.aligned_glbl, i32 0, i32 1) to i64), i64 3), i64* %ptr +; CHECK: store i64 0, i64* %ptr + ret void +} |
