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