llvm-6502/test/CodeGen/X86/GC/dynamic-frame-size.ll
Philip Reames c47a3ae7d5 Teach gcroot how to handle dynamically realigned frames
I'm playing with supporting custom stack map formats with statepoints.  While 
doing so, I noticed that the existing implementation didn't indicate inherently 
unsized frames.  This change essentially just ports the functionality that already 
exists for the default StackMaps section to custom stackmaps.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233891 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-02 05:00:40 +00:00

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LLVM

; RUN: llc < %s | FileCheck %s
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"
declare void @use(<4 x i8*>*)
; Test that a frame which requires dynamic relocation produces a stack map
; with a size of UINT64_MAX.
define void @test(i8* %ptr) gc "erlang" {
; 32 byte alignment (for the alloca) is larger than the default
; 16 byte alignment
%slot = alloca <4 x i8*>
call void @use(<4 x i8*>* %slot);
ret void
}
; CHECK: .note.gc
; CHECK-NEXT: .align 8
; safe point count
; CHECK .short 1
; CHECK .long .Ltmp0
; stack frame size (in words)
; CHECK .short -1
; stack arity (arguments on the stack)
; CHECK .short 0
; live root count
; CHECK .short 0