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Change SPU C calling convention to match that described in

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"SPU Application Binary Interface Specification, v1.9" by
IBM. 
Specifically: use r3-r74 to pass parameters and the return value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111358 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kalle Raiskila
2010-08-18 09:50:30 +00:00
parent 285d06ca93
commit 44ff5f5435
2 changed files with 45 additions and 11 deletions
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33
test/CodeGen/CellSPU/arg_ret.ll Normal file
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@@ -0,0 +1,33 @@
; Test parameter passing and return values
;RUN: llc --march=cellspu %s -o - | FileCheck %s
; this fits into registers r3-r74
%paramstruct = type { i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,
i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,
i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,
i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,
i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,
i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32,i32}
define ccc i32 @test_regs( %paramstruct %prm )
{
;CHECK: lr $3, $74
;CHECK: bi $lr
%1 = extractvalue %paramstruct %prm, 71
ret i32 %1
}
define ccc i32 @test_regs_and_stack( %paramstruct %prm, i32 %stackprm )
{
;CHECK-NOT: a $3, $74, $75
%1 = extractvalue %paramstruct %prm, 71
%2 = add i32 %1, %stackprm
ret i32 %2
}
define ccc %paramstruct @test_return( i32 %param, %paramstruct %prm )
{
;CHEKC: lqd $75, 80($sp)
;CHECK: lr $3, $4
ret %paramstruct %prm
}