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vax.h (NOTICE_UPDATE_CC): Set CC_NO_OVERFLOW in cc_status.flags for integer operations that don't update...

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* vax.h (NOTICE_UPDATE_CC): Set CC_NO_OVERFLOW in cc_status.flags
	for integer operations that don't update C bit.

From-SVN: r43094
This commit is contained in:
John David Anglin 2001-06-09 18:30:12 +00:00 • committed by John David Anglin
parent ed459a390f
commit 544d6fa457
2 changed files with 29 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-06-09 John David Anglin <dave@hiauly1.hia.nrc.ca>
* vax.h (NOTICE_UPDATE_CC): Set CC_NO_OVERFLOW in cc_status.flags
for integer operations that don't update C bit.
2001-06-09 Nicola Pero <nicola@brainstorm.co.uk> 2001-06-09 Nicola Pero <nicola@brainstorm.co.uk>
* gthr-posix.h (__gthread_objc_init_thread_system): If * gthr-posix.h (__gthread_objc_init_thread_system): If

25
gcc/config/vax/vax.h
View file

@ -986,7 +986,30 @@ enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES };
CC_STATUS_INIT; \ CC_STATUS_INIT; \
else if (GET_CODE (SET_DEST (EXP)) != ZERO_EXTRACT \ else if (GET_CODE (SET_DEST (EXP)) != ZERO_EXTRACT \
&& GET_CODE (SET_DEST (EXP)) != PC) \ && GET_CODE (SET_DEST (EXP)) != PC) \
{ cc_status.flags = 0; \ { \
cc_status.flags = 0; \
/* The integer operations below don't set carry or \
set it in an incompatible way. That's ok though \
as the Z bit is all we need when doing unsigned \
comparisons on the result of these insns (since \
they're always with 0). Set CC_NO_OVERFLOW to \
generate the correct unsigned branches. */ \
switch (GET_CODE (SET_SRC (EXP))) \
{ \
case NEG: \
if (GET_MODE_CLASS (GET_MODE (EXP)) == MODE_FLOAT)\
break; \
case AND: \
case IOR: \
case XOR: \
case NOT: \
case MEM: \
case REG: \
cc_status.flags = CC_NO_OVERFLOW; \
break; \
default: \
break; \
} \
cc_status.value1 = SET_DEST (EXP); \ cc_status.value1 = SET_DEST (EXP); \
cc_status.value2 = SET_SRC (EXP); } } \ cc_status.value2 = SET_SRC (EXP); } } \
else if (GET_CODE (EXP) == PARALLEL \ else if (GET_CODE (EXP) == PARALLEL \