llvm/test/Transforms/GlobalOpt/fastcc.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -passes=globalopt -S | FileCheck %s

declare token @llvm.call.preallocated.setup(i32)
declare ptr @llvm.call.preallocated.arg(token, i32)

define internal i32 @f(ptr %m) {
; CHECK-LABEL: define internal fastcc i32 @f(
; CHECK-SAME: ptr [[M:%.*]]) unnamed_addr {
; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[M]], align 4
; CHECK-NEXT:    ret i32 [[V]]
;
  %v = load i32, ptr %m
  ret i32 %v
}

define internal x86_thiscallcc i32 @g(ptr %m) {
; CHECK-LABEL: define internal fastcc i32 @g(
; CHECK-SAME: ptr [[M:%.*]]) unnamed_addr {
; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[M]], align 4
; CHECK-NEXT:    ret i32 [[V]]
;
  %v = load i32, ptr %m
  ret i32 %v
}

; Leave this one alone, because the user went out of their way to request this
; convention.
define internal coldcc i32 @h(ptr %m) {
; CHECK-LABEL: define internal coldcc i32 @h(
; CHECK-SAME: ptr [[M:%.*]]) unnamed_addr {
; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[M]], align 4
; CHECK-NEXT:    ret i32 [[V]]
;
  %v = load i32, ptr %m
  ret i32 %v
}

define internal i32 @j(ptr %m) {
; CHECK-LABEL: define internal i32 @j(
; CHECK-SAME: ptr [[M:%.*]]) {
; CHECK-NEXT:    [[V:%.*]] = load i32, ptr [[M]], align 4
; CHECK-NEXT:    ret i32 [[V]]
;
  %v = load i32, ptr %m
  ret i32 %v
}

define internal i32 @inalloca(ptr inalloca(i32) %p) {
; CHECK-LABEL: define internal fastcc i32 @inalloca(
; CHECK-SAME: ptr [[P:%.*]]) unnamed_addr {
; CHECK-NEXT:    [[RV:%.*]] = load i32, ptr [[P]], align 4
; CHECK-NEXT:    ret i32 [[RV]]
;
  %rv = load i32, ptr %p
  ret i32 %rv
}

define i32 @inalloca2_caller(ptr inalloca(i32) %p) {
; CHECK-LABEL: define i32 @inalloca2_caller(
; CHECK-SAME: ptr inalloca(i32) [[P:%.*]]) local_unnamed_addr {
; CHECK-NEXT:    [[RV:%.*]] = musttail call i32 @inalloca2(ptr inalloca(i32) [[P]])
; CHECK-NEXT:    ret i32 [[RV]]
;
  %rv = musttail call i32 @inalloca2(ptr inalloca(i32) %p)
  ret i32 %rv
}
define internal i32 @inalloca2(ptr inalloca(i32) %p) {
; Because of the musttail caller, this inalloca cannot be dropped.
; CHECK-LABEL: define internal i32 @inalloca2(
; CHECK-SAME: ptr inalloca(i32) [[P:%.*]]) unnamed_addr {
; CHECK-NEXT:    [[RV:%.*]] = load i32, ptr [[P]], align 4
; CHECK-NEXT:    ret i32 [[RV]]
;
  %rv = load i32, ptr %p
  ret i32 %rv
}

define internal i32 @preallocated(ptr preallocated(i32) %p) {
; CHECK-LABEL: define internal fastcc i32 @preallocated(
; CHECK-SAME: ptr [[P:%.*]]) unnamed_addr {
; CHECK-NEXT:    [[RV:%.*]] = load i32, ptr [[P]], align 4
; CHECK-NEXT:    ret i32 [[RV]]
;
  %rv = load i32, ptr %p
  ret i32 %rv
}

define void @call_things() {
; CHECK-LABEL: define void @call_things() local_unnamed_addr {
; CHECK-NEXT:    [[M:%.*]] = alloca i32, align 4
; CHECK-NEXT:    [[TMP1:%.*]] = call fastcc i32 @f(ptr [[M]])
; CHECK-NEXT:    [[TMP2:%.*]] = call fastcc i32 @g(ptr [[M]])
; CHECK-NEXT:    [[TMP3:%.*]] = call coldcc i32 @h(ptr [[M]])
; CHECK-NEXT:    [[TMP4:%.*]] = call i32 @j(ptr [[M]])
; CHECK-NEXT:    [[ARGS:%.*]] = alloca inalloca i32, align 4
; CHECK-NEXT:    [[TMP5:%.*]] = call fastcc i32 @inalloca(ptr [[ARGS]])
; CHECK-NEXT:    [[TMP6:%.*]] = call ptr @llvm.stacksave.p0()
; CHECK-NEXT:    [[PAARG:%.*]] = alloca i32, align 4
; CHECK-NEXT:    [[TMP7:%.*]] = call fastcc i32 @preallocated(ptr [[PAARG]])
; CHECK-NEXT:    call void @llvm.stackrestore.p0(ptr [[TMP6]])
; CHECK-NEXT:    ret void
;
  %m = alloca i32
  call i32 @f(ptr %m)
  call x86_thiscallcc i32 @g(ptr %m)
  call coldcc i32 @h(ptr %m)
  call i32 @j(ptr %m)
  %args = alloca inalloca i32
  call i32 @inalloca(ptr inalloca(i32) %args)
  %c = call token @llvm.call.preallocated.setup(i32 1)
  %N = call ptr @llvm.call.preallocated.arg(token %c, i32 0) preallocated(i32)
  call i32 @preallocated(ptr preallocated(i32) %N) ["preallocated"(token %c)]
  ret void
}

@llvm.used = appending global [1 x ptr] [
  ptr @j
], section "llvm.metadata"

define internal i32 @assume_fastcc() {
; CHECK-LABEL: define internal fastcc i32 @assume_fastcc() {
; CHECK-NEXT:    [[OBJSIZE:%.*]] = call i32 @llvm.objectsize.i32.p0(ptr @assume_fastcc, i1 false, i1 false, i1 false)
; CHECK-NEXT:    ret i32 [[OBJSIZE]]
;
  %objsize = call i32 @llvm.objectsize.i32.p0(ptr @assume_fastcc, i1 false, i1 false, i1 false)
  ret i32 %objsize
}

define internal i32 @constexpr_self_user() addrspace(1) {
; CHECK-LABEL: define internal fastcc i32 @constexpr_self_user() addrspace(1) {
; CHECK-NEXT:    [[OBJSIZE:%.*]] = call i32 @llvm.objectsize.i32.p0(ptr addrspacecast (ptr addrspace(1) @constexpr_self_user to ptr), i1 false, i1 false, i1 false)
; CHECK-NEXT:    ret i32 [[OBJSIZE]]
;
  %objsize = call i32 @llvm.objectsize.i32.p0(ptr addrspacecast (ptr addrspace(1) @constexpr_self_user to ptr), i1 false, i1 false, i1 false)
  ret i32 %objsize
}