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; RUN: opt -S -passes='cgscc(inline,instcombine)' < %s | FileCheck %s
; RUN: opt -S -intra-scc-cost-multiplier=3 -passes='cgscc(inline,instcombine)' < %s | FileCheck %s --check-prefix=THREE
; We use call to a dummy function to avoid inlining test1 into test2 or vice
; versa, such that we aren't left with a trivial cycle, as trivial cycles are
; special-cased to never be inlined.
; However, InstCombine will eliminate these calls after inlining, and thus
; make the functions eligible for inlining in their callers.
declare void @dummy() readnone nounwind willreturn
define void @test1() {
; CHECK-LABEL: define void @test1(
; CHECK-NEXT: call void @test2()
; CHECK-NEXT: call void @test2()
; CHECK-NEXT: ret void
;
call void @test2()
call void @test2()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
ret void
}
define void @test2() {
; CHECK-LABEL: define void @test2(
; CHECK-NEXT: call void @test3()
; CHECK-NEXT: call void @test3()
; CHECK-NEXT: ret void
;
call void @test3() noinline
call void @test3() noinline
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
ret void
}
define void @test3() {
; CHECK-LABEL: define void @test3(
; CHECK-NEXT: call void @test1()
; CHECK-NEXT: call void @test1()
; CHECK-NEXT: ret void
;
call void @test1()
call void @test1()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
call void @dummy()
ret void
}
; The inlined call sites should have the "function-inline-cost-multiplier" call site attribute.
define void @f() {
; CHECK-LABEL: define void @f(
; CHECK-NEXT: call void @test3() #[[COSTMULT:[0-9]+]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: call void @test3() #[[COSTMULT]]
; CHECK-NEXT: ret void
;
call void @test1()
call void @test1()
ret void
}
; CHECK: [[COSTMULT]] = { noinline "function-inline-cost-multiplier"="4" }
; THREE: "function-inline-cost-multiplier"="9"
|
