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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2011-10-10 18:34:56 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2011-10-10 18:34:56 +0000 |
| commit | a86a58695dfbfa1b0e660f09297e6608e3a48bbc (patch) | |
| tree | 53aeaf2bbfa6fd1ea40a05ed48400f6efd5e9fb9 /test/CodeGen | |
| parent | a0ed0c0fcdd8b94f741f296a67669da3180fb42c (diff) | |
| download | llvm-a86a58695dfbfa1b0e660f09297e6608e3a48bbc.tar.gz llvm-a86a58695dfbfa1b0e660f09297e6608e3a48bbc.tar.bz2 llvm-a86a58695dfbfa1b0e660f09297e6608e3a48bbc.tar.xz | |
X86: Add patterns for the movbe instruction (mov + bswap, only available on atom)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141563 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/movbe.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/CodeGen/X86/movbe.ll b/test/CodeGen/X86/movbe.ll new file mode 100644 index 0000000000..0ed84693d5 --- /dev/null +++ b/test/CodeGen/X86/movbe.ll @@ -0,0 +1,36 @@ +; RUN: llc -march=x86-64 -mcpu=atom < %s | FileCheck %s + +declare i32 @llvm.bswap.i32(i32) nounwind readnone +declare i64 @llvm.bswap.i64(i64) nounwind readnone + +define void @test1(i32* nocapture %x, i32 %y) nounwind { + %bswap = call i32 @llvm.bswap.i32(i32 %y) + store i32 %bswap, i32* %x, align 4 + ret void +; CHECK: test1: +; CHECK: movbel %esi, (%rdi) +} + +define i32 @test2(i32* %x) nounwind { + %load = load i32* %x, align 4 + %bswap = call i32 @llvm.bswap.i32(i32 %load) + ret i32 %bswap +; CHECK: test2: +; CHECK: movbel (%rdi), %eax +} + +define void @test3(i64* %x, i64 %y) nounwind { + %bswap = call i64 @llvm.bswap.i64(i64 %y) + store i64 %bswap, i64* %x, align 8 + ret void +; CHECK: test3: +; CHECK: movbeq %rsi, (%rdi) +} + +define i64 @test4(i64* %x) nounwind { + %load = load i64* %x, align 8 + %bswap = call i64 @llvm.bswap.i64(i64 %load) + ret i64 %bswap +; CHECK: test4: +; CHECK: movbeq (%rdi), %rax +} |