diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/sext-of-trunc-nsw.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/sext-of-trunc-nsw.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/sext-of-trunc-nsw.ll b/llvm/test/Transforms/InstCombine/sext-of-trunc-nsw.ll index 516f1a2..4128a15 100644 --- a/llvm/test/Transforms/InstCombine/sext-of-trunc-nsw.ll +++ b/llvm/test/Transforms/InstCombine/sext-of-trunc-nsw.ll @@ -144,6 +144,17 @@ define i24 @wide_source_matching_signbits(i32 %x) { ret i24 %c } +define i32 @wide_source_matching_signbits_has_nsw_flag(i64 %i) { +; CHECK-LABEL: define i32 @wide_source_matching_signbits_has_nsw_flag( +; CHECK-SAME: i64 [[I:%.*]]) { +; CHECK-NEXT: [[A:%.*]] = trunc nsw i64 [[I]] to i32 +; CHECK-NEXT: ret i32 [[A]] +; + %a = trunc nsw i64 %i to i16 + %b = sext i16 %a to i32 + ret i32 %b +} + ; negative test - not enough sign-bits define i24 @wide_source_not_matching_signbits(i32 %x) { |