diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/zext-phi.ll | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/test/Transforms/InstCombine/zext-phi.ll b/llvm/test/Transforms/InstCombine/zext-phi.ll index 5d64b0582f0..5e352415c74 100644 --- a/llvm/test/Transforms/InstCombine/zext-phi.ll +++ b/llvm/test/Transforms/InstCombine/zext-phi.ll @@ -2,16 +2,19 @@ target datalayout = "e-m:e-i64:64-n8:16:32:64" +; Although i1 is not in the datalayout, we should treat it +; as a legal type because it is a fundamental type in IR. +; This means we should shrink the phi (sink the zexts). + define i64 @sink_i1_casts(i1 %cond1, i1 %cond2) { ; CHECK-LABEL: @sink_i1_casts( ; CHECK-NEXT: entry: -; CHECK-NEXT: [[Z1:%.*]] = zext i1 %cond1 to i64 ; CHECK-NEXT: br i1 %cond1, label %if, label %end ; CHECK: if: -; CHECK-NEXT: [[Z2:%.*]] = zext i1 %cond2 to i64 ; CHECK-NEXT: br label %end ; CHECK: end: -; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ [[Z1]], %entry ], [ [[Z2]], %if ] +; CHECK-NEXT: [[PHI_IN:%.*]] = phi i1 [ %cond1, %entry ], [ %cond2, %if ] +; CHECK-NEXT: [[PHI:%.*]] = zext i1 [[PHI_IN]] to i64 ; CHECK-NEXT: ret i64 [[PHI]] ; entry: |
