1; RUN: opt -instcombine -S < %s | FileCheck %s
2
3; Check that code corresponding to the following C function is
4; simplified into a single ASR operation:
5;
6; int test_asr(int a, int b) {
7;   return a < 0 ? -(-a - 1 >> b) - 1 : a >> b;
8; }
9;
10define i32 @test_asr(i32 %a, i32 %b) {
11entry:
12	%c = icmp slt i32 %a, 0
13	br i1 %c, label %bb2, label %bb3
14
15bb2:
16	%t1 = sub i32 0, %a
17	%not = sub i32 %t1, 1
18	%d = ashr i32 %not, %b
19	%t2 = sub i32 0, %d
20	%not2 = sub i32 %t2, 1
21	br label %bb4
22bb3:
23	%e = ashr i32 %a, %b
24	br label %bb4
25bb4:
26        %f = phi i32 [ %not2, %bb2 ], [ %e, %bb3 ]
27	ret i32 %f
28; CHECK-LABEL: @test_asr(
29; CHECK: bb4:
30; CHECK: %f = ashr i32 %a, %b
31; CHECK: ret i32 %f
32}
33