1; Test that the abs library call simplifier works correctly.
2;
3; RUN: opt < %s -instcombine -S | FileCheck %s
4
5target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
6
7declare i32 @abs(i32)
8declare i64 @labs(i64)
9declare i64 @llabs(i64)
10
11; Check abs(x) -> x >s -1 ? x : -x.
12
13define i32 @test_simplify1(i32 %x) {
14; CHECK-LABEL: @test_simplify1(
15  %ret = call i32 @abs(i32 %x)
16; CHECK-NEXT: [[ISPOS:%[a-z0-9]+]] = icmp sgt i32 %x, -1
17; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub i32 0, %x
18; CHECK-NEXT: [[RET:%[a-z0-9]+]] = select i1 [[ISPOS]], i32 %x, i32 [[NEG]]
19  ret i32 %ret
20; CHECK-NEXT: ret i32 [[RET]]
21}
22
23define i64 @test_simplify2(i64 %x) {
24; CHECK-LABEL: @test_simplify2(
25  %ret = call i64 @labs(i64 %x)
26; CHECK-NEXT: [[ISPOS:%[a-z0-9]+]] = icmp sgt i64 %x, -1
27; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub i64 0, %x
28; CHECK-NEXT: [[RET:%[a-z0-9]+]] = select i1 [[ISPOS]], i64 %x, i64 [[NEG]]
29  ret i64 %ret
30; CHECK-NEXT: ret i64 [[RET]]
31}
32
33define i64 @test_simplify3(i64 %x) {
34; CHECK-LABEL: @test_simplify3(
35  %ret = call i64 @llabs(i64 %x)
36; CHECK-NEXT: [[ISPOS:%[a-z0-9]+]] = icmp sgt i64 %x, -1
37; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub i64 0, %x
38; CHECK-NEXT: [[RET:%[a-z0-9]+]] = select i1 [[ISPOS]], i64 %x, i64 [[NEG]]
39  ret i64 %ret
40; CHECK-NEXT: ret i64 [[RET]]
41}
42