f80e7e139e
Fixes https://github.com/llvm/llvm-project/issues/156656 `hasChangeableCCImpl` guarantees the address of the function is not taken, but it ignores assume-like calls. This patch ignores assume-like calls when changing CC.
138 lines
4.7 KiB
LLVM
138 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt < %s -passes=globalopt -S | FileCheck %s
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declare token @llvm.call.preallocated.setup(i32)
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declare ptr @llvm.call.preallocated.arg(token, i32)
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define internal i32 @f(ptr %m) {
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; CHECK-LABEL: define internal fastcc i32 @f(
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; CHECK-SAME: ptr [[M:%.*]]) unnamed_addr {
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[M]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%v = load i32, ptr %m
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ret i32 %v
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}
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define internal x86_thiscallcc i32 @g(ptr %m) {
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; CHECK-LABEL: define internal fastcc i32 @g(
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; CHECK-SAME: ptr [[M:%.*]]) unnamed_addr {
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[M]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%v = load i32, ptr %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(ptr %m) {
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; CHECK-LABEL: define internal coldcc i32 @h(
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; CHECK-SAME: ptr [[M:%.*]]) unnamed_addr {
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[M]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%v = load i32, ptr %m
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ret i32 %v
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}
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define internal i32 @j(ptr %m) {
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; CHECK-LABEL: define internal i32 @j(
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; CHECK-SAME: ptr [[M:%.*]]) {
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[M]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%v = load i32, ptr %m
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ret i32 %v
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}
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define internal i32 @inalloca(ptr inalloca(i32) %p) {
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; CHECK-LABEL: define internal fastcc i32 @inalloca(
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; CHECK-SAME: ptr [[P:%.*]]) unnamed_addr {
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; CHECK-NEXT: [[RV:%.*]] = load i32, ptr [[P]], align 4
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; CHECK-NEXT: ret i32 [[RV]]
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;
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%rv = load i32, ptr %p
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ret i32 %rv
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}
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define i32 @inalloca2_caller(ptr inalloca(i32) %p) {
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; CHECK-LABEL: define i32 @inalloca2_caller(
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; CHECK-SAME: ptr inalloca(i32) [[P:%.*]]) local_unnamed_addr {
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; CHECK-NEXT: [[RV:%.*]] = musttail call i32 @inalloca2(ptr inalloca(i32) [[P]])
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; CHECK-NEXT: ret i32 [[RV]]
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;
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%rv = musttail call i32 @inalloca2(ptr inalloca(i32) %p)
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ret i32 %rv
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}
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define internal i32 @inalloca2(ptr 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(
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; CHECK-SAME: ptr inalloca(i32) [[P:%.*]]) unnamed_addr {
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; CHECK-NEXT: [[RV:%.*]] = load i32, ptr [[P]], align 4
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; CHECK-NEXT: ret i32 [[RV]]
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;
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%rv = load i32, ptr %p
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ret i32 %rv
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}
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define internal i32 @preallocated(ptr preallocated(i32) %p) {
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; CHECK-LABEL: define internal fastcc i32 @preallocated(
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; CHECK-SAME: ptr [[P:%.*]]) unnamed_addr {
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; CHECK-NEXT: [[RV:%.*]] = load i32, ptr [[P]], align 4
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; CHECK-NEXT: ret i32 [[RV]]
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;
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%rv = load i32, ptr %p
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ret i32 %rv
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}
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define void @call_things() {
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; CHECK-LABEL: define void @call_things() local_unnamed_addr {
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; CHECK-NEXT: [[M:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[TMP1:%.*]] = call fastcc i32 @f(ptr [[M]])
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; CHECK-NEXT: [[TMP2:%.*]] = call fastcc i32 @g(ptr [[M]])
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; CHECK-NEXT: [[TMP3:%.*]] = call coldcc i32 @h(ptr [[M]])
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; CHECK-NEXT: [[TMP4:%.*]] = call i32 @j(ptr [[M]])
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; CHECK-NEXT: [[ARGS:%.*]] = alloca inalloca i32, align 4
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; CHECK-NEXT: [[TMP5:%.*]] = call fastcc i32 @inalloca(ptr [[ARGS]])
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; CHECK-NEXT: [[TMP6:%.*]] = call ptr @llvm.stacksave.p0()
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; CHECK-NEXT: [[PAARG:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[TMP7:%.*]] = call fastcc i32 @preallocated(ptr [[PAARG]])
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; CHECK-NEXT: call void @llvm.stackrestore.p0(ptr [[TMP6]])
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; CHECK-NEXT: ret void
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;
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%m = alloca i32
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call i32 @f(ptr %m)
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call x86_thiscallcc i32 @g(ptr %m)
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call coldcc i32 @h(ptr %m)
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call i32 @j(ptr %m)
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%args = alloca inalloca i32
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call i32 @inalloca(ptr inalloca(i32) %args)
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%c = call token @llvm.call.preallocated.setup(i32 1)
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%N = call ptr @llvm.call.preallocated.arg(token %c, i32 0) preallocated(i32)
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call i32 @preallocated(ptr preallocated(i32) %N) ["preallocated"(token %c)]
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ret void
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}
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@llvm.used = appending global [1 x ptr] [
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ptr @j
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], section "llvm.metadata"
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define internal i32 @assume_fastcc() {
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; CHECK-LABEL: define internal fastcc i32 @assume_fastcc() {
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; CHECK-NEXT: [[OBJSIZE:%.*]] = call i32 @llvm.objectsize.i32.p0(ptr @assume_fastcc, i1 false, i1 false, i1 false)
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; CHECK-NEXT: ret i32 [[OBJSIZE]]
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;
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%objsize = call i32 @llvm.objectsize.i32.p0(ptr @assume_fastcc, i1 false, i1 false, i1 false)
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ret i32 %objsize
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}
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define internal i32 @constexpr_self_user() addrspace(1) {
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; CHECK-LABEL: define internal fastcc i32 @constexpr_self_user() addrspace(1) {
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; 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)
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; CHECK-NEXT: ret i32 [[OBJSIZE]]
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;
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%objsize = call i32 @llvm.objectsize.i32.p0(ptr addrspacecast (ptr addrspace(1) @constexpr_self_user to ptr), i1 false, i1 false, i1 false)
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ret i32 %objsize
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}
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