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1; RUN: llc < %s | FileCheck %s2 3; Based on this C++:4; struct A {5; int x;6; A();7; A(const A &a);8; ~A();9; };10; extern "C" void takes_two(A a1, A a2);11; extern "C" void passes_two() { takes_two(A(), A()); }12 13target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"14target triple = "i686--windows-msvc"15 16%struct.A = type { i32 }17 18define void @passes_two() #0 personality ptr @__CxxFrameHandler3 {19entry:20 %argmem = alloca inalloca <{ %struct.A, %struct.A }>, align 421 %0 = getelementptr inbounds <{ %struct.A, %struct.A }>, ptr %argmem, i32 0, i32 122 %call = call x86_thiscallcc ptr @"\01??0A@@QAE@XZ"(ptr %0)23 %1 = getelementptr inbounds <{ %struct.A, %struct.A }>, ptr %argmem, i32 0, i32 024 %call1 = invoke x86_thiscallcc ptr @"\01??0A@@QAE@XZ"(ptr %1)25 to label %invoke.cont unwind label %ehcleanup26 27invoke.cont: ; preds = %entry28 call void @takes_two(ptr inalloca(<{ %struct.A, %struct.A }>) nonnull %argmem)29 ret void30 31ehcleanup: ; preds = %entry32 %2 = cleanuppad within none []33 call x86_thiscallcc void @"\01??1A@@QAE@XZ"(ptr %0) [ "funclet"(token %2) ]34 cleanupret from %2 unwind to caller35}36 37; CHECK: _passes_two:38; CHECK: pushl %ebp39; CHECK: movl %esp, %ebp40; CHECK: subl ${{[0-9]+}}, %esp41; CHECK: pushl %eax42; CHECK: pushl %eax43; CHECK: calll "??0A@@QAE@XZ"44; CHECK: calll "??0A@@QAE@XZ"45; CHECK: calll _takes_two46; ESP must be restored via EBP due to "dynamic" alloca.47; CHECK: leal -{{[0-9]+}}(%ebp), %esp48; CHECK: popl %ebp49; CHECK: retl50 51; CHECK: "?dtor$2@?0?passes_two@4HA":52; CHECK: pushl %ebp53; CHECK: subl $8, %esp54; CHECK: addl $12, %ebp55; CHECK: {{movl|leal}} -{{[0-9]+}}(%ebp), %ecx56; CHECK: calll "??1A@@QAE@XZ"57; CHECK: addl $8, %esp58; CHECK: retl59 60declare void @takes_two(ptr inalloca(<{ %struct.A, %struct.A }>)) #061 62declare x86_thiscallcc ptr @"\01??0A@@QAE@XZ"(ptr returned) #063 64declare i32 @__CxxFrameHandler3(...)65 66declare x86_thiscallcc void @"\01??1A@@QAE@XZ"(ptr) #067 68attributes #0 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }69