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llvm-mirror/test/CodeGen/X86/inalloca-stdcall.ll
Michael Kuperstein 224c7d7edb [X86] Convert esp-relative movs of function arguments into pushes, step 1
This handles the simplest case for mov -> push conversion:
1. x86-32 calling convention, everything is passed through the stack.
2. There is no reserved call frame.
3. Only registers or immediates are pushed, no attempt to combine a mem-reg-mem sequence into a single PUSHmm.

Differential Revision: http://reviews.llvm.org/D6503

llvm-svn: 223757
2014-12-09 06:10:44 +00:00

27 lines
686 B
LLVM

; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s
%Foo = type { i32, i32 }
declare x86_stdcallcc void @f(%Foo* inalloca %a)
declare x86_stdcallcc void @i(i32 %a)
define void @g() {
%b = alloca inalloca %Foo
; CHECK: movl $8, %eax
; CHECK: calll __chkstk
; CHECK: movl %[[REG:[^,]*]], %esp
%f1 = getelementptr %Foo* %b, i32 0, i32 0
%f2 = getelementptr %Foo* %b, i32 0, i32 1
store i32 13, i32* %f1
store i32 42, i32* %f2
; CHECK: movl $13, (%[[REG]])
; CHECK: movl $42, 4(%[[REG]])
call x86_stdcallcc void @f(%Foo* inalloca %b)
; CHECK: calll _f@8
; CHECK-NOT: %esp
; CHECK: pushl
; CHECK: calll _i@4
call x86_stdcallcc void @i(i32 0)
ret void
}