1 ; RUN: opt < %s -instcombine -S | \
4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5 target triple = "x86_64-unknown-linux-gnu"
7 ; Should be optimized to one and.
8 define i1 @test1(i32 %a, i32 %b) {
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]
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
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