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| author | James Molloy <james.molloy@arm.com> | 2016-09-02 07:29:00 +0000 |
|---|---|---|
| committer | James Molloy <james.molloy@arm.com> | 2016-09-02 07:29:00 +0000 |
| commit | f3cf2a494be6aeb52ee323a2f30c63d212afbd5b (patch) | |
| tree | a38d7d3dbc8483967b7373820bbaa06601dd26f8 /llvm/test/Transforms/SimplifyCFG | |
| parent | 3121ddf7fabef34e6876fc46dc243b125dd31b8e (diff) | |
| download | bcm5719-llvm-f3cf2a494be6aeb52ee323a2f30c63d212afbd5b.tar.gz bcm5719-llvm-f3cf2a494be6aeb52ee323a2f30c63d212afbd5b.zip | |
[SimplifyCFG] Add a workaround to fix PR30188
We're sinking stores, which is a good thing, but in the process creating selects for the store address operand, which SROA/Mem2Reg can't look through, which caused serious regressions.
The real fix is in SROA, which I'll be looking into.
llvm-svn: 280470
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/sink-common-code.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/sink-common-code.ll b/llvm/test/Transforms/SimplifyCFG/sink-common-code.ll index db9080effc3..66dfeb8658d 100644 --- a/llvm/test/Transforms/SimplifyCFG/sink-common-code.ll +++ b/llvm/test/Transforms/SimplifyCFG/sink-common-code.ll @@ -562,6 +562,29 @@ if.end: ; CHECK-DAG: [ %cmp3, %if.then3 ] ; CHECK-NEXT: zext i1 %[[x]] to i8 +define i32 @test_pr30188(i1 zeroext %flag, i32 %x) { +entry: + %y = alloca i32 + %z = alloca i32 + br i1 %flag, label %if.then, label %if.else + +if.then: + store i32 %x, i32* %y + br label %if.end + +if.else: + store i32 %x, i32* %z + br label %if.end + +if.end: + ret i32 1 +} + +; CHECK-LABEL: test_pr30188 +; CHECK-NOT: select +; CHECK: store +; CHECK: store + ; CHECK: !0 = !{!1, !1, i64 0} ; CHECK: !1 = !{!"float", !2} ; CHECK: !2 = !{!"an example type tree"} |
