1 ; RUN: opt < %s -instcombine -S | \ 2 ; RUN: FileCheck %s 3 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 ; Should be optimized to one and. 8 define i1 @test1(i32 %a, i32 %b) { 9 ; CHECK-LABEL: @test1( 10 ; CHECK-NEXT: %1 = xor i32 %a, %b 11 ; CHECK-NEXT: %2 = and i32 %1, 65280 12 ; CHECK-NEXT: %tmp = icmp ne i32 %2, 0 13 ; CHECK-NEXT: ret i1 %tmp 14 %tmp1 = and i32 %a, 65280 ; <i32> [#uses=1] 15 %tmp3 = and i32 %b, 65280 ; <i32> [#uses=1] 16 %tmp = icmp ne i32 %tmp1, %tmp3 ; <i1> [#uses=1] 17 ret i1 %tmp 18 } 19 20 define zeroext i1 @test2(i64 %A) { 21 ; CHECK-LABEL: @test2( 22 ; CHECK-NEXT: %[[trunc:.*]] = trunc i64 %A to i8 23 ; CHECK-NEXT: %[[icmp:.*]] = icmp sgt i8 %[[trunc]], -1 24 ; CHECK-NEXT: ret i1 %[[icmp]] 25 %and = and i64 %A, 128 26 %cmp = icmp eq i64 %and, 0 27 ret i1 %cmp 28 } 29 30 define zeroext i1 @test3(i64 %A) { 31 ; CHECK-LABEL: @test3( 32 ; CHECK-NEXT: %[[trunc:.*]] = trunc i64 %A to i8 33 ; CHECK-NEXT: %[[icmp:.*]] = icmp slt i8 %[[trunc]], 0 34 ; CHECK-NEXT: ret i1 %[[icmp]] 35 %and = and i64 %A, 128 36 %cmp = icmp ne i64 %and, 0 37 ret i1 %cmp 38 } 39
