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1; RUN: opt -passes=always-inline -S < %s | FileCheck %s2 3; We used to misclassify inalloca as a static alloca in the inliner. This only4; arose with for alwaysinline functions, because the normal inliner refuses to5; inline such things.6 7; Generated using this C++ source:8; struct Foo {9; Foo();10; Foo(const Foo &o);11; ~Foo();12; int a;13; };14; __forceinline void h(Foo o) {}15; __forceinline void g() { h(Foo()); }16; void f() { g(); }17 18; ModuleID = 't.cpp'19source_filename = "t.cpp"20target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"21target triple = "i386-pc-windows-msvc19.0.24210"22 23%struct.Foo = type { i32 }24 25declare ptr @llvm.stacksave()26declare void @llvm.stackrestore(ptr)27 28declare x86_thiscallcc ptr @"\01??0Foo@@QAE@XZ"(ptr returned) unnamed_addr29declare x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(ptr) unnamed_addr30 31define void @f() {32entry:33 call void @g()34 ret void35}36 37define internal void @g() alwaysinline {38entry:39 %inalloca.save = call ptr @llvm.stacksave()40 %argmem = alloca inalloca <{ %struct.Foo }>, align 441 %call = call x86_thiscallcc ptr @"\01??0Foo@@QAE@XZ"(ptr %argmem)42 call void @h(ptr inalloca(<{ %struct.Foo }>) %argmem)43 call void @llvm.stackrestore(ptr %inalloca.save)44 ret void45}46 47; Function Attrs: alwaysinline inlinehint nounwind48define internal void @h(ptr inalloca(<{ %struct.Foo }>)) alwaysinline {49entry:50 call x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(ptr %0)51 ret void52}53 54; CHECK: define void @f()55; CHECK: %[[STACKSAVE:.*]] = call ptr @llvm.stacksave.p0()56; CHECK: %[[ARGMEM:.*]] = alloca inalloca <{ %struct.Foo }>, align 457; CHECK: %[[CALL:.*]] = call x86_thiscallcc ptr @"\01??0Foo@@QAE@XZ"(ptr %[[ARGMEM]])58; CHECK: call x86_thiscallcc void @"\01??1Foo@@QAE@XZ"(ptr %[[ARGMEM]])59; CHECK: call void @llvm.stackrestore.p0(ptr %[[STACKSAVE]])60; CHECK: ret void61