diff options
Diffstat (limited to 'test/Transforms/SimplifyCFG/SpeculativeExec.ll')
| -rw-r--r-- | test/Transforms/SimplifyCFG/SpeculativeExec.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/SpeculativeExec.ll b/test/Transforms/SimplifyCFG/SpeculativeExec.ll index a61867fe89c7..dd2e5d1c3a77 100644 --- a/test/Transforms/SimplifyCFG/SpeculativeExec.ll +++ b/test/Transforms/SimplifyCFG/SpeculativeExec.ll @@ -44,3 +44,44 @@ join: ret i8 %c } +define i8* @test4(i1* %dummy, i8* %a, i8* %b) { +; Test that we don't speculate an arbitrarily large number of unfolded constant +; expressions. +; CHECK: @test4 + +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: + %x1 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 1 to i8*), %then ] + %x2 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 2 to i8*), %then ] + %x3 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 3 to i8*), %then ] + %x4 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 4 to i8*), %then ] + %x5 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 5 to i8*), %then ] + %x6 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 6 to i8*), %then ] + %x7 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 7 to i8*), %then ] + %x8 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 8 to i8*), %then ] + %x9 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 9 to i8*), %then ] + %x10 = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 10 to i8*), %then ] +; CHECK-NOT: select +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* +; CHECK: phi i8* + + ret i8* %x10 +} |