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| author | Evan Cheng <evan.cheng@apple.com> | 2009-03-12 05:59:15 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-03-12 05:59:15 +0000 |
| commit | 536e66764b93fd1368ce4d1f753cbe909c05b62d (patch) | |
| tree | 5eb23f5f6b44671db2e35e80554adfdb80a6374c /test/CodeGen/X86/i64-mem-copy.ll | |
| parent | 1285295e6152ce7f33c35c034519d3f9dff5b178 (diff) | |
| download | external_llvm-536e66764b93fd1368ce4d1f753cbe909c05b62d.zip external_llvm-536e66764b93fd1368ce4d1f753cbe909c05b62d.tar.gz external_llvm-536e66764b93fd1368ce4d1f753cbe909c05b62d.tar.bz2 | |
On x86, if the only use of a i64 load is a i64 store, generate a pair of double load and store instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66776 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/i64-mem-copy.ll')
| -rw-r--r-- | test/CodeGen/X86/i64-mem-copy.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/CodeGen/X86/i64-mem-copy.ll b/test/CodeGen/X86/i64-mem-copy.ll new file mode 100644 index 0000000..ce54011 --- /dev/null +++ b/test/CodeGen/X86/i64-mem-copy.ll @@ -0,0 +1,13 @@ +; RUN: llvm-as < %s | llc -march=x86-64 | grep {movq.*(%rsi), %rax} +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep {movsd.*(%eax),} + +; Uses movsd to load / store i64 values in sse2 is available. + +; rdar://6659858 + +define void @foo(i64* %x, i64* %y) nounwind { +entry: + %tmp1 = load i64* %y, align 8 ; <i64> [#uses=1] + store i64 %tmp1, i64* %x, align 8 + ret void +} |