diff options
| author | Andrew Zhogin <andrew.zhogin@gmail.com> | 2017-07-05 17:55:42 +0000 |
|---|---|---|
| committer | Andrew Zhogin <andrew.zhogin@gmail.com> | 2017-07-05 17:55:42 +0000 |
| commit | 45d192823ec0bc5ea40cd6af8e1ac00393cc0e21 (patch) | |
| tree | 50aa33e12fc8f8621ad6bdcd0e661b1aad30bb53 /llvm/test/CodeGen/ARM/ror.ll | |
| parent | d7faa9165f5edbe31ec72c7d79b4c368c1e9e1e2 (diff) | |
| download | bcm5719-llvm-45d192823ec0bc5ea40cd6af8e1ac00393cc0e21.tar.gz bcm5719-llvm-45d192823ec0bc5ea40cd6af8e1ac00393cc0e21.zip | |
[DAGCombiner] visitRotate patch to optimize pair of ROTR/ROTL instructions into one with combined shift operand.
For two ROTR operations with shifts C1, C2; combined shift operand will be (C1 + C2) % bitsize.
Differential revision: https://reviews.llvm.org/D12833
llvm-svn: 307179
Diffstat (limited to 'llvm/test/CodeGen/ARM/ror.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/ror.ll | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/llvm/test/CodeGen/ARM/ror.ll b/llvm/test/CodeGen/ARM/ror.ll index a6cc415e830..0f699a8dd29 100644 --- a/llvm/test/CodeGen/ARM/ror.ll +++ b/llvm/test/CodeGen/ARM/ror.ll @@ -3,8 +3,7 @@ ; rotr (rotr x, 4), 6 -> rotr x, 10 -> ror r0, r0, #10 define i32 @test1(i32 %x) nounwind readnone { ; CHECK-LABEL: test1: -; CHECK: ror r0, r0, #4 -; CHECK: ror r0, r0, #6 +; CHECK: ror r0, r0, #10 ; CHECK: bx lr entry: %high_part.i = shl i32 %x, 28 @@ -19,10 +18,8 @@ entry: ; the same vector test define <2 x i32> @test2(<2 x i32> %x) nounwind readnone { ; CHECK-LABEL: test2: -; CHECK: ror r0, r0, #4 -; CHECK: ror r1, r1, #4 -; CHECK: ror r0, r0, #6 -; CHECK: ror r1, r1, #6 +; CHECK: ror r0, r0, #10 +; CHECK: ror r1, r1, #10 ; CHECK: bx lr entry: %high_part.i = shl <2 x i32> %x, <i32 28, i32 28> |
