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| author | Bob Wilson <bob.wilson@apple.com> | 2010-06-29 18:42:49 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-06-29 18:42:49 +0000 |
| commit | 5d52165e4e2f83e6e66063382f323435da21090d (patch) | |
| tree | c1fd105df073a0f934535e1d7e89d872b0a8c0c1 /test | |
| parent | 721ef73d88414b7cfab1f1424db7101ff727ea81 (diff) | |
| download | llvm-5d52165e4e2f83e6e66063382f323435da21090d.tar.gz llvm-5d52165e4e2f83e6e66063382f323435da21090d.tar.bz2 llvm-5d52165e4e2f83e6e66063382f323435da21090d.tar.xz | |
Fix a register scavenger crash when dealing with undefined subregs.
The LowerSubregs pass needs to preserve implicit def operands attached to
EXTRACT_SUBREG instructions when it replaces those instructions with copies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107189 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/2010-06-29-SubregImpDefs.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2010-06-29-SubregImpDefs.ll b/test/CodeGen/ARM/2010-06-29-SubregImpDefs.ll new file mode 100644 index 0000000000..984583e806 --- /dev/null +++ b/test/CodeGen/ARM/2010-06-29-SubregImpDefs.ll @@ -0,0 +1,15 @@ +; RUN: llc < %s -march=arm -mattr=+neon + +@.str271 = external constant [21 x i8], align 4 ; <[21 x i8]*> [#uses=1] +@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (i32, i8**)* @main to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0] + +define i32 @main(i32 %argc, i8** %argv) nounwind { +entry: + %0 = shufflevector <2 x i64> undef, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 2> ; <<2 x i64>> [#uses=1] + store <2 x i64> %0, <2 x i64>* undef, align 16 + %val4723 = load <8 x i16>* undef ; <<8 x i16>> [#uses=1] + call void @PrintShortX(i8* getelementptr inbounds ([21 x i8]* @.str271, i32 0, i32 0), <8 x i16> %val4723, i32 0) nounwind + ret i32 undef +} + +declare void @PrintShortX(i8*, <8 x i16>, i32) nounwind |