| ; RUN: opt < %s -instcombine -S | 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 ; <i32> [#uses=1] |
| %tmp3 = and i32 %b, 65280 ; <i32> [#uses=1] |
| %tmp = icmp ne i32 %tmp1, %tmp3 ; <i1> [#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 |
| } |