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| author | Peter Collingbourne <peter@pcc.me.uk> | 2011-04-29 18:47:25 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2011-04-29 18:47:25 +0000 |
| commit | 8a70192b510e2a0f05493b9212e998017f3d178d (patch) | |
| tree | 51617ac863e94c5d1b82f54b32f80c90ad714f75 /test/Transforms | |
| parent | c8497b6a2565046b5e6b5f2ea9dedc62b53dd966 (diff) | |
| download | external_llvm-8a70192b510e2a0f05493b9212e998017f3d178d.zip external_llvm-8a70192b510e2a0f05493b9212e998017f3d178d.tar.gz external_llvm-8a70192b510e2a0f05493b9212e998017f3d178d.tar.bz2 | |
SimplifyCFG: Add Trunc, ZExt and SExt to the list of cheap instructions for phi node folding
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130526 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/SimplifyCFG/PhiEliminate2.ll | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/test/Transforms/SimplifyCFG/PhiEliminate2.ll b/test/Transforms/SimplifyCFG/PhiEliminate2.ll index c0f6781..0b3893d 100644 --- a/test/Transforms/SimplifyCFG/PhiEliminate2.ll +++ b/test/Transforms/SimplifyCFG/PhiEliminate2.ll @@ -1,14 +1,17 @@ ; RUN: opt < %s -simplifycfg -S | not grep br -define i32 @test(i1 %C, i32 %V1, i32 %V2) { +define i32 @test(i1 %C, i32 %V1, i32 %V2, i16 %V3) { entry: - br i1 %C, label %then, label %Cont + br i1 %C, label %then, label %else then: ; preds = %entry - %V3 = or i32 %V2, %V1 ; <i32> [#uses=1] + %V4 = or i32 %V2, %V1 ; <i32> [#uses=1] br label %Cont -Cont: ; preds = %then, %entry - %V4 = phi i32 [ %V1, %entry ], [ %V3, %then ] ; <i32> [#uses=0] - call i32 @test( i1 false, i32 0, i32 0 ) ; <i32>:0 [#uses=0] +else: ; preds = %entry + %V5 = sext i16 %V3 to i32 ; <i32> [#uses=1] + br label %Cont +Cont: ; preds = %then, %else + %V6 = phi i32 [ %V5, %else ], [ %V4, %then ] ; <i32> [#uses=0] + call i32 @test( i1 false, i32 0, i32 0, i16 0 ) ; <i32>:0 [#uses=0] ret i32 %V1 } |