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Diffstat (limited to 'test/Transforms/InstCombine/exact.ll')
| -rw-r--r-- | test/Transforms/InstCombine/exact.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/exact.ll b/test/Transforms/InstCombine/exact.ll index 58f8b5d..14741e3 100644 --- a/test/Transforms/InstCombine/exact.ll +++ b/test/Transforms/InstCombine/exact.ll @@ -96,6 +96,22 @@ define i1 @ashr_icmp2(i64 %X) nounwind { ret i1 %Z } +; PR9998 +; Make sure we don't transform the ashr here into an sdiv +; CHECK: @pr9998 +; CHECK: = and i32 %V, 1 +; CHECK: %Z = icmp ne +; CHECK: ret i1 %Z +define i1 @pr9998(i32 %V) nounwind { +entry: + %W = shl i32 %V, 31 + %X = ashr exact i32 %W, 31 + %Y = sext i32 %X to i64 + %Z = icmp ugt i64 %Y, 7297771788697658747 + ret i1 %Z +} + + ; CHECK: @udiv_icmp1 ; CHECK: icmp ne i64 %X, 0 define i1 @udiv_icmp1(i64 %X) nounwind { |
