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[NDS32] Consider -mcmodel=X in nds32_legitimate_address_p implementation. 

gcc/
	* config/nds32/nds32.c (nds32_legitimate_address_p): Consider
	TARGET_CMODEL_LARGE and TARGET_CMODEL_MEDIUM cases.

From-SVN: r219515
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Chung-Ju Wu 2015-01-13 06:06:34 +00:00 committed by Chung-Ju Wu
parent 511a41d799
commit 4855be8434
2 changed files with 43 additions and 14 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-01-13 Chung-Ju Wu <jasonwucj@gmail.com>
* config/nds32/nds32.c (nds32_legitimate_address_p): Consider
TARGET_CMODEL_LARGE and TARGET_CMODEL_MEDIUM cases.
2015-01-13 Chung-Ju Wu <jasonwucj@gmail.com>
* config/nds32/nds32.h (NDS32_SYMBOL_FLAG_RODATA): Define our own

52
gcc/config/nds32/nds32.c
View File

@ -1961,24 +1961,27 @@ nds32_legitimate_address_p (machine_mode mode, rtx x, bool strict)
return nds32_address_register_rtx_p (x, strict);
case SYMBOL_REF:
if (!TARGET_GP_DIRECT
/* (mem (symbol_ref A)) => [symbol_ref] */
/* If -mcmodel=large, the 'symbol_ref' is not a valid address
during or after LRA/reload phase. */
if (TARGET_CMODEL_LARGE
&& (reload_completed
|| reload_in_progress
|| lra_in_progress))
return false;
/* If -mcmodel=medium and the symbol references to rodata section,
the 'symbol_ref' is not a valid address during or after
LRA/reload phase. */
if (TARGET_CMODEL_MEDIUM
&& NDS32_SYMBOL_REF_RODATA_P (x)
&& (reload_completed
|| reload_in_progress
|| lra_in_progress))
return false;
/* (mem (symbol_ref A)) => [symbol_ref] */
return !currently_expanding_to_rtl;
return true;
case CONST:
if (!TARGET_GP_DIRECT
&& (reload_completed
|| reload_in_progress
|| lra_in_progress))
return false;
/* (mem (const (...)))
=> [ + const_addr ], where const_addr = symbol_ref + const_int */
if (GET_CODE (XEXP (x, 0)) == PLUS)
@ -1989,9 +1992,30 @@ nds32_legitimate_address_p (machine_mode mode, rtx x, bool strict)
rtx op1 = XEXP (plus_op, 1);
if (GET_CODE (op0) == SYMBOL_REF && CONST_INT_P (op1))
return true;
else
return false;
{
/* Now we see the [ + const_addr ] pattern, but we need
some further checking. */
/* If -mcmodel=large, the 'const_addr' is not a valid address
during or after LRA/reload phase. */
if (TARGET_CMODEL_LARGE
&& (reload_completed
|| reload_in_progress
|| lra_in_progress))
return false;
/* If -mcmodel=medium and the symbol references to rodata section,
the 'const_addr' is not a valid address during or after
LRA/reload phase. */
if (TARGET_CMODEL_MEDIUM
&& NDS32_SYMBOL_REF_RODATA_P (op0)
&& (reload_completed
|| reload_in_progress
|| lra_in_progress))
return false;
/* At this point we can make sure 'const_addr' is a
valid address. */
return true;
}
}
return false;