1 ; RUN: opt < %s -inline-threshold=0 -always-inline -S | FileCheck %s
3 ; Ensure the threshold has no impact on these decisions.
4 ; RUN: opt < %s -inline-threshold=20000000 -always-inline -S | FileCheck %s
5 ; RUN: opt < %s -inline-threshold=-20000000 -always-inline -S | FileCheck %s
7 define i32 @inner1() alwaysinline {
10 define i32 @outer1() {
11 ; CHECK-LABEL: @outer1(
15 %r = call i32 @inner1()
19 ; The always inliner can't DCE internal functions. PR2945
20 ; CHECK-LABEL: @pr2945(
21 define internal i32 @pr2945() nounwind {
25 define internal void @inner2(i32 %N) alwaysinline {
26 %P = alloca i32, i32 %N
29 define void @outer2(i32 %N) {
30 ; The always inliner (unlike the normal one) should be willing to inline
31 ; a function with a dynamic alloca into one without a dynamic alloca.
34 ; CHECK-LABEL: @outer2(
35 ; CHECK-NOT: call void @inner2
36 ; CHECK-NOT: call void @inner2
39 call void @inner2( i32 %N )
43 declare i32 @a() returns_twice
44 declare i32 @b() returns_twice
46 define i32 @inner3() alwaysinline {
48 %call = call i32 @a() returns_twice
49 %add = add nsw i32 1, %call
52 define i32 @outer3() {
54 ; CHECK-LABEL: @outer3(
55 ; CHECK-NOT: call i32 @a
58 %call = call i32 @inner3()
59 %add = add nsw i32 1, %call
63 define i32 @inner4() alwaysinline returns_twice {
65 %call = call i32 @b() returns_twice
66 %add = add nsw i32 1, %call
70 define i32 @outer4() {
72 ; CHECK-LABEL: @outer4(
73 ; CHECK: call i32 @b()
76 %call = call i32 @inner4() returns_twice
77 %add = add nsw i32 1, %call
81 define i32 @inner5(i8* %addr) alwaysinline {
83 indirectbr i8* %addr, [ label %one, label %two ]
91 define i32 @outer5(i32 %x) {
92 ; CHECK-LABEL: @outer5(
93 ; CHECK: call i32 @inner5
96 %cmp = icmp slt i32 %x, 42
97 %addr = select i1 %cmp, i8* blockaddress(@inner5, %one), i8* blockaddress(@inner5, %two)
98 %call = call i32 @inner5(i8* %addr)
102 define void @inner6(i32 %x) alwaysinline {
104 %icmp = icmp slt i32 %x, 0
105 br i1 %icmp, label %return, label %bb
108 %sub = sub nsw i32 %x, 1
109 call void @inner6(i32 %sub)
115 define void @outer6() {
116 ; CHECK-LABEL: @outer6(
117 ; CHECK: call void @inner6(i32 42)
121 call void @inner6(i32 42)