xref: /llvm-project/llvm/test/Transforms/FunctionSpecialization/function-specialization4.ll (revision 06664fdc7680f7f9fa9b0a414a8fb8df2f913d48) 
1; RUN: opt -passes="ipsccp<func-spec>" -force-specialization \
2; RUN:   -funcspec-for-literal-constant=false -funcspec-max-clones=2 \
3; RUN:   -S < %s | FileCheck %s
4
5; RUN: opt -passes="ipsccp<func-spec>" -force-specialization \
6; RUN:   -funcspec-for-literal-constant=false -funcspec-max-clones=1 \
7; RUN:   -S < %s | FileCheck %s --check-prefix=CONST1
8
9target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
10
11@A = external dso_local constant i32, align 4
12@B = external dso_local constant i32, align 4
13@C = external dso_local constant i32, align 4
14@D = external dso_local constant i32, align 4
15
16define dso_local i32 @bar(i32 %x, i32 %y) {
17entry:
18  %tobool = icmp ne i32 %x, 0
19  br i1 %tobool, label %if.then, label %if.else
20
21if.then:
22  %call = call i32 @foo(i32 %x, ptr @A, ptr @C)
23  br label %return
24
25if.else:
26  %call1 = call i32 @foo(i32 %y, ptr @B, ptr @D)
27  br label %return
28
29return:
30  %retval.0 = phi i32 [ %call, %if.then ], [ %call1, %if.else ]
31  ret i32 %retval.0
32}
33
34; CHECK-NOT: define internal i32 @foo(
35define internal i32 @foo(i32 %x, ptr %b, ptr %c) {
36entry:
37  %0 = load i32, ptr %b, align 4
38  %add = add nsw i32 %x, %0
39  %1 = load i32, ptr %c, align 4
40  %add1 = add nsw i32 %add, %1
41  ret i32 %add1
42}
43
44; CONST1:     define internal i32 @foo.specialized.1(i32 %x, ptr %b, ptr %c)
45; CONST1-NOT: define internal i32 @foo.specialized.2(i32 %x, ptr %b, ptr %c)
46
47; CHECK:        define internal i32 @foo.specialized.1(i32 %x, ptr %b, ptr %c) {
48; CHECK-NEXT:   entry:
49; CHECK-NEXT:     %0 = load i32, ptr @A, align 4
50; CHECK-NEXT:     %add = add nsw i32 %x, %0
51; CHECK-NEXT:     %1 = load i32, ptr @C, align 4
52; CHECK-NEXT:     %add1 = add nsw i32 %add, %1
53; CHECK-NEXT:     ret i32 %add1
54; CHECK-NEXT:   }
55
56; CHECK: define internal i32 @foo.specialized.2(i32 %x, ptr %b, ptr %c) {
57; CHECK-NEXT:   entry:
58; CHECK-NEXT:     %0 = load i32, ptr @B, align 4
59; CHECK-NEXT:     %add = add nsw i32 %x, %0
60; CHECK-NEXT:     %1 = load i32, ptr @D, align 4
61; CHECK-NEXT:     %add1 = add nsw i32 %add, %1
62; CHECK-NEXT:     ret i32 %add1
63; CHECK-NEXT:   }
64