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81 lines
2.3 KiB
LLVM
81 lines
2.3 KiB
LLVM
; RUN: opt < %s -globalopt -S | FileCheck %s
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declare token @llvm.call.preallocated.setup(i32)
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declare i8* @llvm.call.preallocated.arg(token, i32)
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define internal i32 @f(i32* %m) {
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; CHECK-LABEL: define internal fastcc i32 @f
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%v = load i32, i32* %m
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ret i32 %v
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}
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define internal x86_thiscallcc i32 @g(i32* %m) {
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; CHECK-LABEL: define internal fastcc i32 @g
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%v = load i32, i32* %m
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ret i32 %v
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}
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; Leave this one alone, because the user went out of their way to request this
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; convention.
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define internal coldcc i32 @h(i32* %m) {
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; CHECK-LABEL: define internal coldcc i32 @h
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%v = load i32, i32* %m
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ret i32 %v
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}
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define internal i32 @j(i32* %m) {
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; CHECK-LABEL: define internal i32 @j
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%v = load i32, i32* %m
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ret i32 %v
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}
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define internal i32 @inalloca(i32* inalloca(i32) %p) {
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; CHECK-LABEL: define internal fastcc i32 @inalloca(i32* %p)
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%rv = load i32, i32* %p
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ret i32 %rv
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}
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define i32 @inalloca2_caller(i32* inalloca(i32) %p) {
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%rv = musttail call i32 @inalloca2(i32* inalloca(i32) %p)
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ret i32 %rv
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}
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define internal i32 @inalloca2(i32* inalloca(i32) %p) {
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; Because of the musttail caller, this inalloca cannot be dropped.
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; CHECK-LABEL: define internal i32 @inalloca2(i32* inalloca(i32) %p)
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%rv = load i32, i32* %p
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ret i32 %rv
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}
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define internal i32 @preallocated(i32* preallocated(i32) %p) {
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; CHECK-LABEL: define internal fastcc i32 @preallocated(i32* %p)
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%rv = load i32, i32* %p
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ret i32 %rv
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}
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define void @call_things() {
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%m = alloca i32
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call i32 @f(i32* %m)
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call x86_thiscallcc i32 @g(i32* %m)
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call coldcc i32 @h(i32* %m)
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call i32 @j(i32* %m)
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%args = alloca inalloca i32
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call i32 @inalloca(i32* inalloca(i32) %args)
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%c = call token @llvm.call.preallocated.setup(i32 1)
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%N = call i8* @llvm.call.preallocated.arg(token %c, i32 0) preallocated(i32)
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%n = bitcast i8* %N to i32*
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call i32 @preallocated(i32* preallocated(i32) %n) ["preallocated"(token %c)]
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ret void
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}
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; CHECK-LABEL: define void @call_things()
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; CHECK: call fastcc i32 @f
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; CHECK: call fastcc i32 @g
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; CHECK: call coldcc i32 @h
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; CHECK: call i32 @j
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; CHECK: call fastcc i32 @inalloca(i32* %args)
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; CHECK-NOT: llvm.call.preallocated
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; CHECK: call fastcc i32 @preallocated(i32* %n)
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@llvm.used = appending global [1 x i8*] [
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i8* bitcast (i32(i32*)* @j to i8*)
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], section "llvm.metadata"
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