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| author | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
|---|---|---|
| committer | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
| commit | dce4a407a24b04eebc6a376f8e62b41aaa7b071f (patch) | |
| tree | dcebc53f2b182f145a2e659393bf9a0472cedf23 /test/CodeGen/AArch64/arm64-coalesce-ext.ll | |
| parent | 220b921aed042f9e520c26cffd8282a94c66c3d5 (diff) | |
| download | external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.zip external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.gz external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.bz2 | |
Update LLVM for 3.5 rebase (r209712).
Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
Diffstat (limited to 'test/CodeGen/AArch64/arm64-coalesce-ext.ll')
| -rw-r--r-- | test/CodeGen/AArch64/arm64-coalesce-ext.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-coalesce-ext.ll b/test/CodeGen/AArch64/arm64-coalesce-ext.ll new file mode 100644 index 0000000..9420bf3 --- /dev/null +++ b/test/CodeGen/AArch64/arm64-coalesce-ext.ll @@ -0,0 +1,17 @@ +; RUN: llc -march=arm64 -mtriple=arm64-apple-darwin < %s | FileCheck %s +; Check that the peephole optimizer knows about sext and zext instructions. +; CHECK: test1sext +define i32 @test1sext(i64 %A, i64 %B, i32* %P, i64 *%P2) nounwind { + %C = add i64 %A, %B + ; CHECK: add x[[SUM:[0-9]+]], x0, x1 + %D = trunc i64 %C to i32 + %E = shl i64 %C, 32 + %F = ashr i64 %E, 32 + ; CHECK: sxtw x[[EXT:[0-9]+]], w[[SUM]] + store volatile i64 %F, i64 *%P2 + ; CHECK: str x[[EXT]] + store volatile i32 %D, i32* %P + ; Reuse low bits of extended register, don't extend live range of SUM. + ; CHECK: str w[[SUM]] + ret i32 %D +} |