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| author | Evandro Menezes <e.menezes@samsung.com> | 2017-08-02 15:34:06 +0000 |
|---|---|---|
| committer | Evandro Menezes <e.menezes@samsung.com> | 2017-08-02 15:34:06 +0000 |
| commit | 89a67b8353cf6d75ca5c41ffba94d156e77b3079 (patch) | |
| tree | d7c205a7a33f04c23a35c6115e9dfa4a8e660af0 | |
| parent | 61b39b2aecd85e3ddcfcd219a91686aab6aaf305 (diff) | |
| download | bcm5719-llvm-89a67b8353cf6d75ca5c41ffba94d156e77b3079.tar.gz bcm5719-llvm-89a67b8353cf6d75ca5c41ffba94d156e77b3079.zip | |
[AArch64] Improve the test of conditional branch fusion
Separate the checking of the fused pairings with B.cc and CBcc.
llvm-svn: 309825
| -rw-r--r-- | llvm/test/CodeGen/AArch64/misched-fusion.ll | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/llvm/test/CodeGen/AArch64/misched-fusion.ll b/llvm/test/CodeGen/AArch64/misched-fusion.ll index ee6007e393c..59c3583e3d1 100644 --- a/llvm/test/CodeGen/AArch64/misched-fusion.ll +++ b/llvm/test/CodeGen/AArch64/misched-fusion.ll @@ -1,14 +1,34 @@ -; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck %s -; RUN: llc -o - %s -mcpu=cyclone | FileCheck %s +; RUN: llc -o - %s -mattr=+arith-bcc-fusion | FileCheck --check-prefix=FUSEBCC %s +; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck --check-prefix=FUSECBZ %s +; RUN: llc -o - %s -mcpu=cyclone | FileCheck --check-prefix=FUSEBCC --check-prefix=FUSECBZ %s target triple = "aarch64-unknown" declare void @foobar(i32 %v0, i32 %v1) +; Make sure cmp is scheduled in front of bcc +; FUSEBCC-LABEL: test_cmp_bcc: +; FUSEBCC: cmp {{w[0-9]+}}, #13 +; FUSEBCC-NEXT: b.ne {{.?LBB[0-9_]+}} +define void @test_cmp_bcc(i32 %a0, i32 %a1) { +entry: + %cond = icmp eq i32 %a0, 13 + %v1 = add i32 %a1, 7 + br i1 %cond, label %if, label %exit + +if: + call void @foobar(i32 %v1, i32 %a0) + br label %exit + +exit: + call void @foobar(i32 %a0, i32 %v1) + ret void +} + ; Make sure sub is scheduled in front of cbnz -; CHECK-LABEL: test_sub_cbz: -; CHECK: subs w[[SUBRES:[0-9]+]], w0, #13 -; CHECK: b.ne {{.?LBB[0-9_]+}} +; FUSECBZ-LABEL: test_sub_cbz: +; FUSECBZ: subs [[SUBRES:w[0-9]+]], w0, #13 +; FUSECBZ: b.ne {{.?LBB[0-9_]+}} define void @test_sub_cbz(i32 %a0, i32 %a1) { entry: ; except for the fusion opportunity the sub/add should be equal so the |
