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TheRock/compiler/amd-llvm/llvm/test/Transforms/Inline/inalloca-not-static.ll
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2026-09-02 16:34:47 -07:00

61 lines
1.8 KiB
LLVM

; RUN: opt -passes=always-inline -S < %s | FileCheck %s
; We used to misclassify inalloca as a static alloca in the inliner. This only
; arose with for alwaysinline functions, because the normal inliner refuses to
; inline such things.
; Generated using this C++ source:
; struct Foo {
; Foo();
; Foo(const Foo &o);
; ~Foo();
; int a;
; };
; __forceinline void h(Foo o) {}
; __forceinline void g() { h(Foo()); }
; void f() { g(); }
; ModuleID = 't.cpp'
source_filename = "t.cpp"
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
target triple = "i386-pc-windows-msvc19.0.24210"
%struct.Foo = type { i32 }
declare ptr @llvm.stacksave()
declare void @llvm.stackrestore(ptr)
declare x86_thiscallcc ptr @"\01??0Foo@@QAE@XZ"(ptr returned) unnamed_addr
declare x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(ptr) unnamed_addr
define void @f() {
entry:
call void @g()
ret void
}
define internal void @g() alwaysinline {
entry:
%inalloca.save = call ptr @llvm.stacksave()
%argmem = alloca inalloca <{ %struct.Foo }>, align 4
%call = call x86_thiscallcc ptr @"\01??0Foo@@QAE@XZ"(ptr %argmem)
call void @h(ptr inalloca(<{ %struct.Foo }>) %argmem)
call void @llvm.stackrestore(ptr %inalloca.save)
ret void
}
; Function Attrs: alwaysinline inlinehint nounwind
define internal void @h(ptr inalloca(<{ %struct.Foo }>)) alwaysinline {
entry:
call x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(ptr %0)
ret void
}
; CHECK: define void @f()
; CHECK: %[[STACKSAVE:.*]] = call ptr @llvm.stacksave.p0()
; CHECK: %[[ARGMEM:.*]] = alloca inalloca <{ %struct.Foo }>, align 4
; CHECK: %[[CALL:.*]] = call x86_thiscallcc ptr @"\01??0Foo@@QAE@XZ"(ptr %[[ARGMEM]])
; CHECK: call x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(ptr %[[ARGMEM]])
; CHECK: call void @llvm.stackrestore.p0(ptr %[[STACKSAVE]])
; CHECK: ret void