; RUN: opt < %s -instcombine -S | \ ; RUN: FileCheck %s target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; Should be optimized to one and. define i1 @test1(i32 %a, i32 %b) { ; CHECK-LABEL: @test1( ; CHECK-NEXT: %1 = xor i32 %a, %b ; CHECK-NEXT: %2 = and i32 %1, 65280 ; CHECK-NEXT: %tmp = icmp ne i32 %2, 0 ; CHECK-NEXT: ret i1 %tmp %tmp1 = and i32 %a, 65280 ; [#uses=1] %tmp3 = and i32 %b, 65280 ; [#uses=1] %tmp = icmp ne i32 %tmp1, %tmp3 ; [#uses=1] ret i1 %tmp } define zeroext i1 @test2(i64 %A) { ; CHECK-LABEL: @test2( ; CHECK-NEXT: %[[trunc:.*]] = trunc i64 %A to i8 ; CHECK-NEXT: %[[icmp:.*]] = icmp sgt i8 %[[trunc]], -1 ; CHECK-NEXT: ret i1 %[[icmp]] %and = and i64 %A, 128 %cmp = icmp eq i64 %and, 0 ret i1 %cmp } define zeroext i1 @test3(i64 %A) { ; CHECK-LABEL: @test3( ; CHECK-NEXT: %[[trunc:.*]] = trunc i64 %A to i8 ; CHECK-NEXT: %[[icmp:.*]] = icmp slt i8 %[[trunc]], 0 ; CHECK-NEXT: ret i1 %[[icmp]] %and = and i64 %A, 128 %cmp = icmp ne i64 %and, 0 ret i1 %cmp }