xref: /llvm-project/llvm/test/Transforms/FunctionSpecialization/phi-nodes-can-constfold.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.specialized.1(i64 3, i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
8*2fb51fbaSMats Petersson; CHECK-NEXT:    [[F2:%.*]] = call i64 @foo(i64 [[X1]], i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
9*2fb51fbaSMats Petersson; CHECK-NEXT:    [[ADD:%.*]] = add i64 [[F1]], [[F2]]
10*2fb51fbaSMats Petersson; CHECK-NEXT:    ret i64 [[ADD]]
11*2fb51fbaSMats Petersson;
12*2fb51fbaSMats Peterssonentry:
13*2fb51fbaSMats Petersson  %f1 = call i64 @foo(i64 3, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
14*2fb51fbaSMats Petersson  %f2 = call i64 @foo(i64 %x1, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
15*2fb51fbaSMats Petersson  %add = add i64 %f1, %f2
16*2fb51fbaSMats Petersson  ret i64 %add
17*2fb51fbaSMats Petersson}
18*2fb51fbaSMats Petersson
19*2fb51fbaSMats Peterssondefine internal i64 @foo(i64 %n, i1 %c1, i1 %c2, i1 %c3, i1 %c4) {
20*2fb51fbaSMats Peterssonentry:
21*2fb51fbaSMats Petersson  br label %l0
22*2fb51fbaSMats Petersson
23*2fb51fbaSMats Peterssonl1:
24*2fb51fbaSMats Petersson  %phi1 = phi i64 [ %phi0, %l0 ], [ %phi2, %l2 ]
25*2fb51fbaSMats Petersson  %add = add i64 %phi1, 1
26*2fb51fbaSMats Petersson  %div = sdiv i64 %add, 2
27*2fb51fbaSMats Petersson  br i1 %c2, label %l2, label %exit
28*2fb51fbaSMats Petersson
29*2fb51fbaSMats Peterssonl2:
30*2fb51fbaSMats Petersson  %phi2 = phi i64 [ %phi0, %l0 ], [ %phi1, %l1 ]
31*2fb51fbaSMats Petersson  %sub = sub i64 %phi2, 1
32*2fb51fbaSMats Petersson  %mul = mul i64 %sub, 2
33*2fb51fbaSMats Petersson  br i1 %c4, label %l1, label %exit
34*2fb51fbaSMats Petersson
35*2fb51fbaSMats Peterssonl0:
36*2fb51fbaSMats Petersson  %phi0 = phi i64 [ %n, %entry ]
37*2fb51fbaSMats Petersson  br i1 %c1, label %l1, label %l2
38*2fb51fbaSMats Petersson
39*2fb51fbaSMats Peterssonexit:
40*2fb51fbaSMats Petersson  %res = phi i64 [ %div, %l1 ], [ %mul, %l2]
41*2fb51fbaSMats Petersson  ret i64 %res
42*2fb51fbaSMats Petersson}
43