llvm/test/Transforms/FunctionSpecialization/function-specialization-minsize.ll


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

; RUN: opt -passes="ipsccp<func-spec>" -S < %s | FileCheck %s

; CHECK-NOT: @compute.specialized.1
; CHECK-NOT: @compute.specialized.2

define i64 @main(i64 %x, i1 %flag) {
entry:
  br i1 %flag, label %plus, label %minus

plus:
  %tmp0 = call i64 @compute(i64 %x, ptr @plus)
  br label %merge

minus:
  %tmp1 = call i64 @compute(i64 %x, ptr @minus)
  br label %merge

merge:
  %tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
  ret i64 %tmp2
}

define internal i64 @compute(i64 %x, ptr %binop) minsize {
entry:
  %tmp0 = call i64 %binop(i64 %x)
  ret i64 %tmp0
}

define internal i64 @plus(i64 %x) {
entry:
  %tmp0 = add i64 %x, 1
  ret i64 %tmp0
}

define internal i64 @minus(i64 %x) {
entry:
  %tmp0 = sub i64 %x, 1
  ret i64 %tmp0
}