xref: /llvm-project/llvm/test/Transforms/FunctionSpecialization/phi-nodes-non-constfoldable.ll (revision 2fb51fba8ca904a6d3ddf30ae94228ecf9e6a231)
1*2fb51fbaSMats Petersson; RUN: opt -passes="ipsccp<func-spec>" -funcspec-min-function-size=10 -funcspec-for-literal-constant -S < %s | FileCheck %s
2*2fb51fbaSMats Petersson
3*2fb51fbaSMats Peterssondefine i64 @bar(i1 %c1, i1 %c2, i1 %c3, i1 %c4, i64 %x1) {
4*2fb51fbaSMats Petersson; CHECK-LABEL: define i64 @bar(
5*2fb51fbaSMats Petersson; CHECK-SAME: i1 [[C1:%.*]], i1 [[C2:%.*]], i1 [[C3:%.*]], i1 [[C4:%.*]], i64 [[X1:%.*]]) {
6*2fb51fbaSMats Petersson; CHECK-NEXT:  entry:
7*2fb51fbaSMats Petersson; CHECK-NEXT:    [[F1:%.*]] = call i64 @foo(i64 3, i64 4, i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
8*2fb51fbaSMats Petersson; CHECK-NEXT:    [[F2:%.*]] = call i64 @foo(i64 4, i64 [[X1]], i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
9*2fb51fbaSMats Petersson; CHECK-NEXT:    [[F3:%.*]] = call i64 @foo.specialized.1(i64 3, i64 3, i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
10*2fb51fbaSMats Petersson; CHECK-NEXT:    [[ADD:%.*]] = add i64 [[F1]], [[F2]]
11*2fb51fbaSMats Petersson; CHECK-NEXT:    [[ADD2:%.*]] = add i64 [[ADD]], [[F3]]
12*2fb51fbaSMats Petersson; CHECK-NEXT:    ret i64 [[ADD2]]
13*2fb51fbaSMats Petersson;
14*2fb51fbaSMats Peterssonentry:
15*2fb51fbaSMats Petersson  %f1 = call i64 @foo(i64 3, i64 4, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
16*2fb51fbaSMats Petersson  %f2 = call i64 @foo(i64 4, i64 %x1, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
17*2fb51fbaSMats Petersson  %f3 = call i64 @foo(i64 3, i64 3, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
18*2fb51fbaSMats Petersson  %add = add i64 %f1, %f2
19*2fb51fbaSMats Petersson  %add2 = add i64 %add, %f3
20*2fb51fbaSMats Petersson  ret i64 %add2
21*2fb51fbaSMats Petersson}
22*2fb51fbaSMats Petersson
23*2fb51fbaSMats Peterssondefine internal i64 @foo(i64 %n, i64 %m, i1 %c1, i1 %c2, i1 %c3, i1 %c4) {
24*2fb51fbaSMats Peterssonentry:
25*2fb51fbaSMats Petersson  br i1 %c1, label %l1, label %l4
26*2fb51fbaSMats Petersson
27*2fb51fbaSMats Peterssonl1:
28*2fb51fbaSMats Petersson  %phi1 = phi i64 [ %n, %entry ], [ %phi2, %l2 ]
29*2fb51fbaSMats Petersson  %add = add i64 %phi1, 1
30*2fb51fbaSMats Petersson  %div = sdiv i64 %add, 2
31*2fb51fbaSMats Petersson  br i1 %c2, label %l1_5, label %exit
32*2fb51fbaSMats Petersson
33*2fb51fbaSMats Peterssonl1_5:
34*2fb51fbaSMats Petersson  br i1 %c3, label %l2, label %l3
35*2fb51fbaSMats Petersson
36*2fb51fbaSMats Peterssonl2:
37*2fb51fbaSMats Petersson  %phi2 = phi i64 [ %phi1, %l1_5 ], [ %phi3, %l3 ]
38*2fb51fbaSMats Petersson  br label %l1
39*2fb51fbaSMats Petersson
40*2fb51fbaSMats Peterssonl3:
41*2fb51fbaSMats Petersson  %phi3 = phi i64 [ %phi1, %l1_5 ], [ %m, %l4 ]
42*2fb51fbaSMats Petersson  br i1 %c2, label %l4, label %l2
43*2fb51fbaSMats Petersson
44*2fb51fbaSMats Peterssonl4:
45*2fb51fbaSMats Petersson  %phi4 = phi i64 [ %n, %entry ], [ %phi3, %l3 ]
46*2fb51fbaSMats Petersson  %sub = sub i64 %phi4, 1
47*2fb51fbaSMats Petersson  %mul = mul i64 %sub, 2
48*2fb51fbaSMats Petersson  br i1 %c4, label %l3, label %exit
49*2fb51fbaSMats Petersson
50*2fb51fbaSMats Peterssonexit:
51*2fb51fbaSMats Petersson  %res = phi i64 [ %div, %l1 ], [ %mul, %l4]
52*2fb51fbaSMats Petersson  ret i64 %res
53*2fb51fbaSMats Petersson}
54*2fb51fbaSMats Petersson
55