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Treat QImode addresses the same way GO_IF_LEGITIMATE_INDEX does.

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From-SVN: r30500
This commit is contained in:
Bernd Schmidt 1999-11-12 13:38:38 +00:00 • committed by Nick Clifton
parent e428d7383b
commit 15052bd18c
2 changed files with 51 additions and 46 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Fri Nov 12 13:31:54 1999 Bernd Schmidt <bernds@cygnus.co.uk>
* config/arm/arm.h (LEGITIMIZE_RELOAD_ADDRESS): Treat QImode
addresses the same way GO_IF_LEGITIMATE_INDEX does.
Fri Nov 12 12:36:04 1999 Bernd Schmidt <bernds@cygnus.co.uk>
* cse.c (hash_arg_in_struct): Delete.

92
gcc/config/arm/arm.h
View file

@ -1015,52 +1015,52 @@ enum reg_class
For the ARM, we wish to handle large displacements off a base
register by splitting the addend across a MOV and the mem insn.
This can cut the number of reloads needed. */
#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
do \
{ \
if (GET_CODE (X) == PLUS \
&& GET_CODE (XEXP (X, 0)) == REG \
&& REGNO (XEXP (X, 0)) < FIRST_PSEUDO_REGISTER \
&& REG_MODE_OK_FOR_BASE_P (XEXP (X, 0), MODE) \
&& GET_CODE (XEXP (X, 1)) == CONST_INT) \
{ \
HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
HOST_WIDE_INT low, high; \
\
if (MODE == DImode || (TARGET_SOFT_FLOAT && MODE == DFmode)) \
low = ((val & 0xf) ^ 0x8) - 0x8; \
else if (MODE == SImode || MODE == QImode \
|| (MODE == SFmode && TARGET_SOFT_FLOAT) \
|| (MODE == HImode && ! arm_arch4)) \
/* Need to be careful, -4096 is not a valid offset */ \
low = val >= 0 ? (val & 0xfff) : -((-val) & 0xfff); \
else if (MODE == HImode && arm_arch4) \
/* Need to be careful, -256 is not a valid offset */ \
low = val >= 0 ? (val & 0xff) : -((-val) & 0xff); \
else if (GET_MODE_CLASS (MODE) == MODE_FLOAT \
&& TARGET_HARD_FLOAT) \
/* Need to be careful, -1024 is not a valid offset */ \
low = val >= 0 ? (val & 0x3ff) : -((-val) & 0x3ff); \
else \
break; \
\
high = ((((val - low) & 0xffffffff) ^ 0x80000000) - 0x80000000); \
/* Check for overflow or zero */ \
if (low == 0 || high == 0 || (high + low != val)) \
break; \
\
/* Reload the high part into a base reg; leave the low part \
in the mem. */ \
X = gen_rtx_PLUS (GET_MODE (X), \
gen_rtx_PLUS (GET_MODE (X), XEXP (X, 0), \
GEN_INT (high)), \
GEN_INT (low)); \
push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL_PTR, \
BASE_REG_CLASS, GET_MODE (X), VOIDmode, 0, 0, \
OPNUM, TYPE); \
goto WIN; \
} \
} \
#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
do \
{ \
if (GET_CODE (X) == PLUS \
&& GET_CODE (XEXP (X, 0)) == REG \
&& REGNO (XEXP (X, 0)) < FIRST_PSEUDO_REGISTER \
&& REG_MODE_OK_FOR_BASE_P (XEXP (X, 0), MODE) \
&& GET_CODE (XEXP (X, 1)) == CONST_INT) \
{ \
HOST_WIDE_INT val = INTVAL (XEXP (X, 1)); \
HOST_WIDE_INT low, high; \
\
if (MODE == DImode || (TARGET_SOFT_FLOAT && MODE == DFmode)) \
low = ((val & 0xf) ^ 0x8) - 0x8; \
else if (MODE == SImode \
|| (MODE == SFmode && TARGET_SOFT_FLOAT) \
|| ((MODE == HImode || MODE == QImode) && ! arm_arch4)) \
/* Need to be careful, -4096 is not a valid offset */ \
low = val >= 0 ? (val & 0xfff) : -((-val) & 0xfff); \
else if ((MODE == HImode || MODE == QImode) && arm_arch4) \
/* Need to be careful, -256 is not a valid offset */ \
low = val >= 0 ? (val & 0xff) : -((-val) & 0xff); \
else if (GET_MODE_CLASS (MODE) == MODE_FLOAT \
&& TARGET_HARD_FLOAT) \
/* Need to be careful, -1024 is not a valid offset */ \
low = val >= 0 ? (val & 0x3ff) : -((-val) & 0x3ff); \
else \
break; \
\
high = ((((val - low) & 0xffffffff) ^ 0x80000000) - 0x80000000); \
/* Check for overflow or zero */ \
if (low == 0 || high == 0 || (high + low != val)) \
break; \
\
/* Reload the high part into a base reg; leave the low part \
in the mem. */ \
X = gen_rtx_PLUS (GET_MODE (X), \
gen_rtx_PLUS (GET_MODE (X), XEXP (X, 0), \
GEN_INT (high)), \
GEN_INT (low)); \
push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL_PTR, \
BASE_REG_CLASS, GET_MODE (X), VOIDmode, 0, 0, \
OPNUM, TYPE); \
goto WIN; \
} \
} \
while (0)
/* Return the maximum number of consecutive registers