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5ceb906da9
Summary: These ADJCALLSTACK markers don't generate code, but they keep dynamic alloca code that calls chkstk out of the prologue. This slightly pessimizes inalloca calls by preventing some register copy coalescing, but I can live with that. Reviewers: qcolombet Subscribers: hans, llvm-commits Differential Revision: http://reviews.llvm.org/D15200 llvm-svn: 254645
28 lines
697 B
LLVM
28 lines
697 B
LLVM
; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s
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%Foo = type { i32, i32 }
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declare x86_stdcallcc void @f(%Foo* inalloca %a)
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declare x86_stdcallcc void @i(i32 %a)
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define void @g() {
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; CHECK-LABEL: _g:
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%b = alloca inalloca %Foo
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; CHECK: movl $8, %eax
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; CHECK: calll __chkstk
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%f1 = getelementptr %Foo, %Foo* %b, i32 0, i32 0
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%f2 = getelementptr %Foo, %Foo* %b, i32 0, i32 1
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store i32 13, i32* %f1
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store i32 42, i32* %f2
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; CHECK: movl %esp, %eax
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; CHECK: movl $13, (%eax)
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; CHECK: movl $42, 4(%eax)
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call x86_stdcallcc void @f(%Foo* inalloca %b)
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; CHECK: calll _f@8
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; CHECK-NOT: %esp
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; CHECK: pushl
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; CHECK: calll _i@4
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call x86_stdcallcc void @i(i32 0)
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ret void
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}
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