; This test makes sure that add instructions are properly eliminated. ; This test is for Integer BitWidth > 64 && BitWidth <= 1024. ; RUN: opt %s -instcombine | llvm-dis | \ ; RUN: grep -v OK | not grep add ; END. define i111 @test1(i111 %x) { %tmp.2 = shl i111 1, 110 %tmp.4 = xor i111 %x, %tmp.2 ;; Add of sign bit -> xor of sign bit. %tmp.6 = add i111 %tmp.4, %tmp.2 ret i111 %tmp.6 } define i65 @test2(i65 %x) { %tmp.0 = shl i65 1, 64 %tmp.2 = xor i65 %x, %tmp.0 ;; Add of sign bit -> xor of sign bit. %tmp.4 = add i65 %tmp.2, %tmp.0 ret i65 %tmp.4 } define i1024 @test3(i1024 %x) { %tmp.0 = shl i1024 1, 1023 %tmp.2 = xor i1024 %x, %tmp.0 ;; Add of sign bit -> xor of sign bit. %tmp.4 = add i1024 %tmp.2, %tmp.0 ret i1024 %tmp.4 } define i128 @test4(i128 %x) { ;; If we have ADD(XOR(AND(X, 0xFF), 0xF..F80), 0x80), it's a sext. %tmp.5 = shl i128 1, 127 %tmp.1 = ashr i128 %tmp.5, 120 %tmp.2 = xor i128 %x, %tmp.1 %tmp.4 = add i128 %tmp.2, %tmp.5 ret i128 %tmp.4 } define i77 @test6(i77 %x) { ;; (x & 254)+1 -> (x & 254)|1 %tmp.2 = and i77 %x, 562949953421310 %tmp.4 = add i77 %tmp.2, 1 ret i77 %tmp.4 }