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1; RUN: opt -always-inline -S < %s | FileCheck %s
2; RUN: opt -passes=always-inline -S < %s | FileCheck %s
3
4; We used to misclassify inalloca as a static alloca in the inliner. This only
5; arose with for alwaysinline functions, because the normal inliner refuses to
6; inline such things.
7
8; Generated using this C++ source:
9; struct Foo {
10;   Foo();
11;   Foo(const Foo &o);
12;   ~Foo();
13;   int a;
14; };
15; __forceinline void h(Foo o) {}
16; __forceinline void g() { h(Foo()); }
17; void f() { g(); }
18
19; ModuleID = 't.cpp'
20source_filename = "t.cpp"
21target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
22target triple = "i386-pc-windows-msvc19.0.24210"
23
24%struct.Foo = type { i32 }
25
26declare i8* @llvm.stacksave()
27declare void @llvm.stackrestore(i8*)
28
29declare x86_thiscallcc %struct.Foo* @"\01??0Foo@@QAE@XZ"(%struct.Foo* returned) unnamed_addr
30declare x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(%struct.Foo*) unnamed_addr
31
32define void @f() {
33entry:
34  call void @g()
35  ret void
36}
37
38define internal void @g() alwaysinline {
39entry:
40  %inalloca.save = call i8* @llvm.stacksave()
41  %argmem = alloca inalloca <{ %struct.Foo }>, align 4
42  %0 = getelementptr inbounds <{ %struct.Foo }>, <{ %struct.Foo }>* %argmem, i32 0, i32 0
43  %call = call x86_thiscallcc %struct.Foo* @"\01??0Foo@@QAE@XZ"(%struct.Foo* %0)
44  call void @h(<{ %struct.Foo }>* inalloca %argmem)
45  call void @llvm.stackrestore(i8* %inalloca.save)
46  ret void
47}
48
49; Function Attrs: alwaysinline inlinehint nounwind
50define internal void @h(<{ %struct.Foo }>* inalloca) alwaysinline {
51entry:
52  %o = getelementptr inbounds <{ %struct.Foo }>, <{ %struct.Foo }>* %0, i32 0, i32 0
53  call x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(%struct.Foo* %o)
54  ret void
55}
56
57; CHECK: define void @f()
58; CHECK:   %[[STACKSAVE:.*]] = call i8* @llvm.stacksave()
59; CHECK:   %[[ARGMEM:.*]] = alloca inalloca <{ %struct.Foo }>, align 4
60; CHECK:   %[[GEP1:.*]] = getelementptr inbounds <{ %struct.Foo }>, <{ %struct.Foo }>* %[[ARGMEM]], i32 0, i32 0
61; CHECK:   %[[CALL:.*]] = call x86_thiscallcc %struct.Foo* @"\01??0Foo@@QAE@XZ"(%struct.Foo* %[[GEP1]])
62; CHECK:   %[[GEP2:.*]] = getelementptr inbounds <{ %struct.Foo }>, <{ %struct.Foo }>* %[[ARGMEM]], i32 0, i32 0
63; CHECK:   call x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(%struct.Foo* %[[GEP2]])
64; CHECK:   call void @llvm.stackrestore(i8* %[[STACKSAVE]])
65; CHECK:   ret void
66