| ; RUN: llc < %s -march=x86-64 | |
| ; PR3763 | |
| %struct.__block_descriptor = type { i64, i64 } | |
| define %struct.__block_descriptor @evUTCTime() nounwind { | |
| entry: | |
| br i1 false, label %if.then, label %return | |
| if.then: ; preds = %entry | |
| %srcval18 = load i128* null, align 8 ; <i128> [#uses=1] | |
| %tmp15 = lshr i128 %srcval18, 64 ; <i128> [#uses=1] | |
| %tmp9 = mul i128 %tmp15, 18446744073709551616000 ; <i128> [#uses=1] | |
| br label %return | |
| return: ; preds = %if.then, %entry | |
| %retval.0 = phi i128 [ %tmp9, %if.then ], [ undef, %entry ] ; <i128> [#uses=0] | |
| ret %struct.__block_descriptor undef | |
| } | |
| define i128 @test(i128 %arg) nounwind { | |
| %A = shl i128 1, 92 | |
| %B = sub i128 0, %A | |
| %C = mul i128 %arg, %B | |
| ret i128 %C ;; should codegen to neg(shift) | |
| } |