; This test makes sure that add instructions are properly eliminated. ; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0. ; RUN: opt %s -instcombine | llvm-dis | \ ; RUN: grep -v OK | not grep add define i1 @test1(i1 %x) { %tmp.2 = xor i1 %x, 1 ;; Add of sign bit -> xor of sign bit. %tmp.4 = add i1 %tmp.2, 1 ret i1 %tmp.4 } define i47 @test2(i47 %x) { %tmp.2 = xor i47 %x, 70368744177664 ;; Add of sign bit -> xor of sign bit. %tmp.4 = add i47 %tmp.2, 70368744177664 ret i47 %tmp.4 } define i15 @test3(i15 %x) { %tmp.2 = xor i15 %x, 16384 ;; Add of sign bit -> xor of sign bit. %tmp.4 = add i15 %tmp.2, 16384 ret i15 %tmp.4 } define i49 @test6(i49 %x) { ;; (x & 254)+1 -> (x & 254)|1 %tmp.2 = and i49 %x, 562949953421310 %tmp.4 = add i49 %tmp.2, 1 ret i49 %tmp.4 }