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1; RUN: llc < %s -mtriple=x86_64--2; PR37633 %struct.__block_descriptor = type { i64, i64 }4 5define %struct.__block_descriptor @evUTCTime() nounwind {6entry:7 br i1 false, label %if.then, label %return8 9if.then: ; preds = %entry10 %srcval18 = load i128, ptr 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 %return14 15return: ; preds = %if.then, %entry16 %retval.0 = phi i128 [ %tmp9, %if.then ], [ undef, %entry ] ; <i128> [#uses=0]17 ret %struct.__block_descriptor undef18}19 20define i128 @test(i128 %arg) nounwind {21 %A = shl i128 1, 9222 %B = sub i128 0, %A23 %C = mul i128 %arg, %B24 ret i128 %C ;; should codegen to neg(shift)25}26