llvm-6502/test/CodeGen/CellSPU/bigstack.ll

; RUN: llc < %s -march=cellspu -o %t1.s
; RUN: grep lqx   %t1.s | count 3
; RUN: grep il    %t1.s | grep -v file | count 5
; RUN: grep stqx  %t1.s | count 1

define i32 @bigstack() nounwind {
entry:
  %avar = alloca i32                            
  %big_data = alloca [2048 x i32]                
  store i32 3840, i32* %avar, align 4
  br label %return

return:                                          
  %retval = load i32* %avar                
  ret i32 %retval
}
From Kalle Raiskila: "the bigstack patch for SPU, with testcase. It is essentially the patch committed as 97091, and reverted as 97099, but with the following additions: -in vararg handling, registers are marked to be live, to not confuse the register scavenger -function prologue and epilogue are not emitted, if the stack size is 16. 16 means it is empty - there is only the register scavenger emergency spill slot, which is not used as there is no stack." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99819 91177308-0d34-0410-b5e6-96231b3b80d8 2010-03-29 17:38:47 +00:00			`; RUN: llc < %s -march=cellspu -o %t1.s`
Have SPU handle halfvec stores aligned by 8 bytes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110576 91177308-0d34-0410-b5e6-96231b3b80d8 2010-08-09 16:33:00 +00:00			`; RUN: grep lqx %t1.s \| count 3`
			`; RUN: grep il %t1.s \| grep -v file \| count 5`
			`; RUN: grep stqx %t1.s \| count 1`
From Kalle Raiskila: "the bigstack patch for SPU, with testcase. It is essentially the patch committed as 97091, and reverted as 97099, but with the following additions: -in vararg handling, registers are marked to be live, to not confuse the register scavenger -function prologue and epilogue are not emitted, if the stack size is 16. 16 means it is empty - there is only the register scavenger emergency spill slot, which is not used as there is no stack." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99819 91177308-0d34-0410-b5e6-96231b3b80d8 2010-03-29 17:38:47 +00:00
			`define i32 @bigstack() nounwind {`
			`entry:`
			`%avar = alloca i32`
			`%big_data = alloca [2048 x i32]`
			`store i32 3840, i32* %avar, align 4`
			`br label %return`

			`return:`
			`%retval = load i32* %avar`
			`ret i32 %retval`
			`}`