diff options
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/branch-fold.ll')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/branch-fold.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/branch-fold.ll b/llvm/test/Transforms/SimplifyCFG/branch-fold.ll index 2b296811918..70c5fb5db2d 100644 --- a/llvm/test/Transforms/SimplifyCFG/branch-fold.ll +++ b/llvm/test/Transforms/SimplifyCFG/branch-fold.ll @@ -17,3 +17,36 @@ b: c: ret void } + +; rdar://10554090 +define zeroext i1 @test2(i64 %i0, i64 %i1) nounwind uwtable readonly ssp { +entry: +; CHECK: test2 +; CHECK: br i1 + %and.i.i = and i64 %i0, 281474976710655 + %and.i11.i = and i64 %i1, 281474976710655 + %or.cond = icmp eq i64 %and.i.i, %and.i11.i + br i1 %or.cond, label %c, label %a + +a: +; CHECK: br + %shr.i4.i = lshr i64 %i0, 48 + %and.i5.i = and i64 %shr.i4.i, 32767 + %shr.i.i = lshr i64 %i1, 48 + %and.i2.i = and i64 %shr.i.i, 32767 + %cmp9.i = icmp ult i64 %and.i5.i, %and.i2.i + br i1 %cmp9.i, label %c, label %b + +b: +; CHECK-NOT: br + %shr.i13.i9 = lshr i64 %i1, 48 + %and.i14.i10 = and i64 %shr.i13.i9, 32767 + %shr.i.i11 = lshr i64 %i0, 48 + %and.i11.i12 = and i64 %shr.i.i11, 32767 + %phitmp = icmp uge i64 %and.i14.i10, %and.i11.i12 + br label %c + +c: + %o2 = phi i1 [ false, %a ], [ %phitmp, %b ], [ false, %entry ] + ret i1 %o2 +} |
