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|
; RUN: opt < %s -inline-threshold=0 -always-inline -S | FileCheck %s
;
; Ensure the threshold has no impact on these decisions.
; RUN: opt < %s -inline-threshold=20000000 -always-inline -S | FileCheck %s
; RUN: opt < %s -inline-threshold=-20000000 -always-inline -S | FileCheck %s
define i32 @inner1() alwaysinline {
ret i32 1
}
define i32 @outer1() {
; CHECK-LABEL: @outer1(
; CHECK-NOT: call
; CHECK: ret
%r = call i32 @inner1()
ret i32 %r
}
; The always inliner can't DCE internal functions. PR2945
; CHECK-LABEL: @pr2945(
define internal i32 @pr2945() nounwind {
ret i32 0
}
define internal void @inner2(i32 %N) alwaysinline {
%P = alloca i32, i32 %N
ret void
}
define void @outer2(i32 %N) {
; The always inliner (unlike the normal one) should be willing to inline
; a function with a dynamic alloca into one without a dynamic alloca.
; rdar://6655932
;
; CHECK-LABEL: @outer2(
; CHECK-NOT: call void @inner2
; CHECK-NOT: call void @inner2
; CHECK: ret void
call void @inner2( i32 %N )
ret void
}
declare i32 @a() returns_twice
declare i32 @b() returns_twice
define i32 @inner3() alwaysinline {
entry:
%call = call i32 @a() returns_twice
%add = add nsw i32 1, %call
ret i32 %add
}
define i32 @outer3() {
entry:
; CHECK-LABEL: @outer3(
; CHECK-NOT: call i32 @a
; CHECK: ret
%call = call i32 @inner3()
%add = add nsw i32 1, %call
ret i32 %add
}
define i32 @inner4() alwaysinline returns_twice {
entry:
%call = call i32 @b() returns_twice
%add = add nsw i32 1, %call
ret i32 %add
}
define i32 @outer4() {
entry:
; CHECK-LABEL: @outer4(
; CHECK: call i32 @b()
; CHECK: ret
%call = call i32 @inner4() returns_twice
%add = add nsw i32 1, %call
ret i32 %add
}
define i32 @inner5(i8* %addr) alwaysinline {
entry:
indirectbr i8* %addr, [ label %one, label %two ]
one:
ret i32 42
two:
ret i32 44
}
define i32 @outer5(i32 %x) {
; CHECK-LABEL: @outer5(
; CHECK: call i32 @inner5
; CHECK: ret
%cmp = icmp slt i32 %x, 42
%addr = select i1 %cmp, i8* blockaddress(@inner5, %one), i8* blockaddress(@inner5, %two)
%call = call i32 @inner5(i8* %addr)
ret i32 %call
}
define void @inner6(i32 %x) alwaysinline {
entry:
%icmp = icmp slt i32 %x, 0
br i1 %icmp, label %return, label %bb
bb:
%sub = sub nsw i32 %x, 1
call void @inner6(i32 %sub)
ret void
return:
ret void
}
define void @outer6() {
; CHECK-LABEL: @outer6(
; CHECK: call void @inner6(i32 42)
; CHECK: ret
entry:
call void @inner6(i32 42)
ret void
}
define i32 @inner7() {
ret i32 1
}
define i32 @outer7() {
; CHECK-LABEL: @outer7(
; CHECK-NOT: call
; CHECK: ret
%r = call i32 @inner7() alwaysinline
ret i32 %r
}
|
