1 ; RUN: llc < %s -march=x86-64 2 ; PR3763 3 %struct.__block_descriptor = type { i64, i64 } 4 5 define %struct.__block_descriptor @evUTCTime() nounwind { 6 entry: 7 br i1 false, label %if.then, label %return 8 9 if.then: ; preds = %entry 10 %srcval18 = load i128* null, align 8 ; <i128> [#uses=1] 11 %tmp15 = lshr i128 %srcval18, 64 ; <i128> [#uses=1] 12 %tmp9 = mul i128 %tmp15, 18446744073709551616000 ; <i128> [#uses=1] 13 br label %return 14 15 return: ; preds = %if.then, %entry 16 %retval.0 = phi i128 [ %tmp9, %if.then ], [ undef, %entry ] ; <i128> [#uses=0] 17 ret %struct.__block_descriptor undef 18 } 19 20 define i128 @test(i128 %arg) nounwind { 21 %A = shl i128 1, 92 22 %B = sub i128 0, %A 23 %C = mul i128 %arg, %B 24 ret i128 %C ;; should codegen to neg(shift) 25 } 26
