1 ; RUN: opt < %s -instcombine -S | FileCheck %s
3 define i32 @test1(i32 %X) {
5 icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
6 zext i1 %0 to i32 ; <i32>:1 [#uses=1]
9 ; CHECK: lshr i32 %X, 31
13 define i32 @test2(i32 %X) {
15 icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1]
16 zext i1 %0 to i32 ; <i32>:1 [#uses=1]
19 ; CHECK: lshr i32 %X, 31
24 define i32 @test3(i32 %X) {
26 icmp slt i32 %X, 0 ; <i1>:0 [#uses=1]
27 sext i1 %0 to i32 ; <i32>:1 [#uses=1]
30 ; CHECK: ashr i32 %X, 31
34 define i32 @test4(i32 %X) {
36 icmp ult i32 %X, -2147483648 ; <i1>:0 [#uses=1]
37 sext i1 %0 to i32 ; <i32>:1 [#uses=1]
40 ; CHECK: ashr i32 %X, 31
46 define <2 x i1> @test5(<2 x i64> %x) {
48 %V = icmp eq <2 x i64> %x, undef
51 ; CHECK: ret <2 x i1> undef
54 define i32 @test6(i32 %a, i32 %b) {
55 %c = icmp sle i32 %a, -1
56 %d = zext i1 %c to i32
61 ; CHECK-NEXT: ashr i32 %a, 31
62 ; CHECK-NEXT: %f = and i32 %e, %b
63 ; CHECK-NEXT: ret i32 %f