1; RUN: opt -function-specialization -func-specialization-avg-iters-cost=3 -S < %s | \
2; RUN:   FileCheck %s --check-prefixes=COMMON,DISABLED
3; RUN: opt -function-specialization -force-function-specialization -S < %s | \
4; RUN:   FileCheck %s --check-prefixes=COMMON,FORCE
5; RUN: opt -function-specialization -func-specialization-avg-iters-cost=3 -force-function-specialization -S < %s | \
6; RUN:   FileCheck %s --check-prefixes=COMMON,FORCE
7
8; Test for specializing a constant global.
9
10target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
11
12@A = external dso_local constant i32, align 4
13@B = external dso_local constant i32, align 4
14
15define dso_local i32 @bar(i32 %x, i32 %y) {
16; COMMON-LABEL: @bar
17; FORCE:        %call = call i32 @foo.1(i32 %x, i32* @A)
18; FORCE:        %call1 = call i32 @foo.2(i32 %y, i32* @B)
19; DISABLED-NOT: %call1 = call i32 @foo.1(
20entry:
21  %tobool = icmp ne i32 %x, 0
22  br i1 %tobool, label %if.then, label %if.else
23
24if.then:
25  %call = call i32 @foo(i32 %x, i32* @A)
26  br label %return
27
28if.else:
29  %call1 = call i32 @foo(i32 %y, i32* @B)
30  br label %return
31
32return:
33  %retval.0 = phi i32 [ %call, %if.then ], [ %call1, %if.else ]
34  ret i32 %retval.0
35}
36
37; FORCE:      define internal i32 @foo.1(i32 %x, i32* %b) {
38; FORCE-NEXT: entry:
39; FORCE-NEXT:   %0 = load i32, i32* @A, align 4
40; FORCE-NEXT:   %add = add nsw i32 %x, %0
41; FORCE-NEXT:   ret i32 %add
42; FORCE-NEXT: }
43
44; FORCE:      define internal i32 @foo.2(i32 %x, i32* %b) {
45; FORCE-NEXT: entry:
46; FORCE-NEXT:   %0 = load i32, i32* @B, align 4
47; FORCE-NEXT:   %add = add nsw i32 %x, %0
48; FORCE-NEXT:   ret i32 %add
49; FORCE-NEXT: }
50
51define internal i32 @foo(i32 %x, i32* %b) {
52entry:
53  %0 = load i32, i32* %b, align 4
54  %add = add nsw i32 %x, %0
55  ret i32 %add
56}
57