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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-11-01 21:18:39 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-11-01 21:18:39 +0000 |
| commit | f6aa6b12f132b41b1337fef14110696458a0f323 (patch) | |
| tree | dcc7831b3c74c83f80c67910e8a1177d05601ab7 /test/CodeGen | |
| parent | fadfd7b9776c723357894af00442a35d0a4d0acf (diff) | |
| download | llvm-f6aa6b12f132b41b1337fef14110696458a0f323.tar.gz llvm-f6aa6b12f132b41b1337fef14110696458a0f323.tar.bz2 llvm-f6aa6b12f132b41b1337fef14110696458a0f323.tar.xz | |
Teach the x86 backend a couple tricks for dealing with v16i8 sra by a constant splat value. Fixes PR11289.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143498 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/x86-shifts.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGen/X86/x86-shifts.ll b/test/CodeGen/X86/x86-shifts.ll index 3e44eafa24..20bccab8ff 100644 --- a/test/CodeGen/X86/x86-shifts.ll +++ b/test/CodeGen/X86/x86-shifts.ll @@ -170,3 +170,23 @@ define <16 x i8> @shr9(<16 x i8> %A) nounwind { ; CHECK: pand ; CHECK: ret } + +define <16 x i8> @sra_v16i8_7(<16 x i8> %A) nounwind { + %B = ashr <16 x i8> %A, <i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7, i8 7> + ret <16 x i8> %B +; CHECK: sra_v16i8_7: +; CHECK: pxor +; CHECK: pcmpgtb +; CHECK: ret +} + +define <16 x i8> @sra_v16i8(<16 x i8> %A) nounwind { + %B = ashr <16 x i8> %A, <i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3, i8 3> + ret <16 x i8> %B +; CHECK: sra_v16i8: +; CHECK: psrlw $3 +; CHECK: pand +; CHECK: pxor +; CHECK: psubb +; CHECK: ret +} |