diff options
Diffstat (limited to 'test/CodeGen/ARM/2012-03-13-DAGCombineBug.ll')
| -rw-r--r-- | test/CodeGen/ARM/2012-03-13-DAGCombineBug.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2012-03-13-DAGCombineBug.ll b/test/CodeGen/ARM/2012-03-13-DAGCombineBug.ll new file mode 100644 index 0000000..6206cd7 --- /dev/null +++ b/test/CodeGen/ARM/2012-03-13-DAGCombineBug.ll @@ -0,0 +1,15 @@ +; RUN: llc < %s -mtriple=thumbv7-apple-ios | FileCheck %s +; rdar://11035895 + +; DAG combine incorrectly optimize (i32 vextract (v4i16 load $addr), c) to +; (i16 load $addr+c*sizeof(i16)). It should have issued an extload instead. i.e. +; (i32 extload $addr+c*sizeof(i16) +define void @test_hi_short3(<3 x i16> * nocapture %srcA, <2 x i16> * nocapture %dst) nounwind { +entry: +; CHECK: vst1.32 + %0 = load <3 x i16> * %srcA, align 8 + %1 = shufflevector <3 x i16> %0, <3 x i16> undef, <2 x i32> <i32 2, i32 undef> + store <2 x i16> %1, <2 x i16> * %dst, align 4 + ret void +} + |
