| ; In PR41658, argpromotion put an inalloca in a position that per the |
| ; calling convention is passed in a register. This test verifies that |
| ; we don't do that anymore. It also verifies that the combination of |
| ; globalopt and argpromotion is able to optimize the call safely. |
| ; |
| ; RUN: opt -S -argpromotion %s | FileCheck --check-prefix=THIS %s |
| ; RUN: opt -S -globalopt -argpromotion %s | FileCheck --check-prefix=OPT %s |
| ; THIS: define internal x86_thiscallcc void @internalfun(%struct.a* %this, <{ %struct.a |
| ; OPT: define internal fastcc void @internalfun(<{ %struct.a }>* %0) |
| |
| target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" |
| target triple = "i386-pc-windows-msvc19.11.0" |
| |
| %struct.a = type { i8 } |
| |
| define internal x86_thiscallcc void @internalfun(%struct.a* %this, <{ %struct.a }>* inalloca) { |
| entry: |
| %a = getelementptr inbounds <{ %struct.a }>, <{ %struct.a }>* %0, i32 0, i32 0 |
| %argmem = alloca inalloca <{ %struct.a }>, align 4 |
| %1 = getelementptr inbounds <{ %struct.a }>, <{ %struct.a }>* %argmem, i32 0, i32 0 |
| %call = call x86_thiscallcc %struct.a* @copy_ctor(%struct.a* %1, %struct.a* dereferenceable(1) %a) |
| call void @ext(<{ %struct.a }>* inalloca %argmem) |
| ret void |
| } |
| |
| ; This is here to ensure @internalfun is live. |
| define void @exportedfun(%struct.a* %a) { |
| %inalloca.save = tail call i8* @llvm.stacksave() |
| %argmem = alloca inalloca <{ %struct.a }>, align 4 |
| call x86_thiscallcc void @internalfun(%struct.a* %a, <{ %struct.a }>* inalloca %argmem) |
| call void @llvm.stackrestore(i8* %inalloca.save) |
| ret void |
| } |
| |
| declare x86_thiscallcc %struct.a* @copy_ctor(%struct.a* returned, %struct.a* dereferenceable(1)) |
| declare void @ext(<{ %struct.a }>* inalloca) |
| declare i8* @llvm.stacksave() |
| declare void @llvm.stackrestore(i8*) |