1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-22 20:43:44 +02:00
llvm-mirror/test/CodeGen/X86/inalloca-ctor.ll
Hans Wennborg 5b89989aa5 Re-commit r269828 "X86: Avoid using _chkstk when lowering WIN_ALLOCA instructions"
with an additional fix to make RegAllocFast ignore undef physreg uses. It would
previously get confused about the "push %eax" instruction's use of eax. That
method for adjusting the stack pointer is used in X86FrameLowering::emitSPUpdate
as well, but since that runs after register-allocation, we didn't run into the
RegAllocFast issue before.

llvm-svn: 269949
2016-05-18 16:10:17 +00:00

35 lines
842 B
LLVM

; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s
%Foo = type { i32, i32 }
%frame = type { %Foo, i32, %Foo }
declare void @f(%frame* inalloca %a)
declare void @Foo_ctor(%Foo* %this)
define void @g() {
entry:
%args = alloca inalloca %frame
%c = getelementptr %frame, %frame* %args, i32 0, i32 2
; CHECK: pushl %eax
; CHECK: subl $16, %esp
; CHECK: movl %esp,
call void @Foo_ctor(%Foo* %c)
; CHECK: leal 12(%{{.*}}),
; CHECK-NEXT: pushl
; CHECK-NEXT: calll _Foo_ctor
; CHECK: addl $4, %esp
%b = getelementptr %frame, %frame* %args, i32 0, i32 1
store i32 42, i32* %b
; CHECK: movl $42,
%a = getelementptr %frame, %frame* %args, i32 0, i32 0
call void @Foo_ctor(%Foo* %a)
; CHECK-NEXT: pushl
; CHECK-NEXT: calll _Foo_ctor
; CHECK: addl $4, %esp
call void @f(%frame* inalloca %args)
; CHECK: calll _f
ret void
}