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Diffstat (limited to 'test/Transforms/SimplifyCFG/SpeculativeExec.ll')
| -rw-r--r-- | test/Transforms/SimplifyCFG/SpeculativeExec.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/SpeculativeExec.ll b/test/Transforms/SimplifyCFG/SpeculativeExec.ll index a61867f..c66d3ec 100644 --- a/test/Transforms/SimplifyCFG/SpeculativeExec.ll +++ b/test/Transforms/SimplifyCFG/SpeculativeExec.ll @@ -44,3 +44,25 @@ join: ret i8 %c } +define i8* @test3(i1* %dummy, i8* %a, i8* %b) { +; Test that a weird, unfolded constant cast in the PHI don't block speculation. +; CHECK: @test3 + +entry: + %cond1 = load volatile i1* %dummy + br i1 %cond1, label %if, label %end + +if: + %cond2 = load volatile i1* %dummy + br i1 %cond2, label %then, label %end + +then: + br label %end + +end: + %x = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 42 to i8*), %then ] +; CHECK-NOT: phi +; CHECK: select i1 %cond2, i8* inttoptr + + ret i8* %x +} |