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| author | Derek Schuff <dschuff@google.com> | 2013-04-18 17:41:08 +0000 |
|---|---|---|
| committer | Derek Schuff <dschuff@google.com> | 2013-04-18 17:41:08 +0000 |
| commit | 2061dcf0e4266c487185f1b3d8e23b93e2dd68fb (patch) | |
| tree | f8fae2e562fa6d2839d321e4a7481e6724d746cc /test | |
| parent | a3fb330d05e85107d01ecf133355d0c6a88196fd (diff) | |
| download | llvm-2061dcf0e4266c487185f1b3d8e23b93e2dd68fb.tar.gz llvm-2061dcf0e4266c487185f1b3d8e23b93e2dd68fb.tar.bz2 llvm-2061dcf0e4266c487185f1b3d8e23b93e2dd68fb.tar.xz | |
Allow misaligned stores in x86 fast-isel.
In X86FastISel::X86SelectStore(), improperly aligned stores are rejected and
handled by the DAG-based ISel. However, X86FastISel::X86SelectLoad() makes
no such requirement. There doesn't appear to be an x86 architectural
correctness issue with allowing potentially unaligned store instructions.
This patch removes this restriction.
Patch by Jim Stichnot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179774 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/fast-isel-unaligned-store.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fast-isel-unaligned-store.ll b/test/CodeGen/X86/fast-isel-unaligned-store.ll new file mode 100644 index 0000000000..7ce7f676ad --- /dev/null +++ b/test/CodeGen/X86/fast-isel-unaligned-store.ll @@ -0,0 +1,18 @@ +; RUN: llc -mtriple=x86_64-none-linux -fast-isel -fast-isel-abort < %s | FileCheck %s +; RUN: llc -mtriple=i686-none-linux -fast-isel -fast-isel-abort < %s | FileCheck %s + +define i32 @test_store_32(i32* nocapture %addr, i32 %value) { +entry: + store i32 %value, i32* %addr, align 1 + ret i32 %value +} + +; CHECK: ret + +define i16 @test_store_16(i16* nocapture %addr, i16 %value) { +entry: + store i16 %value, i16* %addr, align 1 + ret i16 %value +} + +; CHECK: ret |