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77c1b73211
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223757 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
686 B
LLVM
27 lines
686 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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%b = alloca inalloca %Foo
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; CHECK: movl $8, %eax
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; CHECK: calll __chkstk
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; CHECK: movl %[[REG:[^,]*]], %esp
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%f1 = getelementptr %Foo* %b, i32 0, i32 0
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%f2 = getelementptr %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 $13, (%[[REG]])
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; CHECK: movl $42, 4(%[[REG]])
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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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