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i386.c (ix86_expand_fp_compare): Delay creating of scratch register until when it is really needed.

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* i386.c (ix86_expand_fp_compare): Delay creating of scratch register
	until when it is really needed.
	(ix86_expand_compare): Update call of ix86_expand_fp_compare.
	* i386.h (PREDICATE_CODES): Add all codes for sse_comparison_operator
	* i386.md (float?i?f splitter): Don't force source operand to memory
	for SSE.
	(sse_movdfcc): Fix constraint.
	(sse_movdfcc splitter): Handle properly the second alternative.

From-SVN: r40216
This commit is contained in:
Jan Hubicka 2001-03-03 19:49:05 +01:00 • committed by Jan Hubicka
parent 6b630c42c6
commit bf71a4f81c
4 changed files with 24 additions and 6 deletions
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11
gcc/ChangeLog
View file

@ -1,3 +1,14 @@
Sat Mar 3 19:47:13 CET 2001 Jan Hubicka <jh@suse.cz>
* i386.c (ix86_expand_fp_compare): Delay creating of scratch register
until when it is really needed.
(ix86_expand_compare): Update call of ix86_expand_fp_compare.
* i386.h (PREDICATE_CODES): Add all codes for sse_comparison_operator
* i386.md (float?i?f splitter): Don't force source operand to memory
for SSE.
(sse_movdfcc): Fix constraint.
(sse_movdfcc splitter): Handle properly the second alternative.
2001-03-03 Neil Booth <neil@daikokuya.demon.co.uk>
* cpplex.c (parse_string): Unconditionally pedwarn.

6
gcc/config/i386/i386.c
View file

@ -5196,6 +5196,8 @@ ix86_expand_fp_compare (code, op0, op1, scratch, second_test, bypass_test)
{
tmp = gen_rtx_COMPARE (fpcmp_mode, op0, op1);
tmp2 = gen_rtx_UNSPEC (HImode, gen_rtvec (1, tmp), 9);
if (!scratch)
scratch = gen_reg_rtx (HImode);
emit_insn (gen_rtx_SET (VOIDmode, scratch, tmp2));
emit_insn (gen_x86_sahf_1 (scratch));
}
@ -5217,6 +5219,8 @@ ix86_expand_fp_compare (code, op0, op1, scratch, second_test, bypass_test)
/* Sadness wrt reg-stack pops killing fpsr -- gotta get fnstsw first. */
tmp = gen_rtx_COMPARE (fpcmp_mode, op0, op1);
tmp2 = gen_rtx_UNSPEC (HImode, gen_rtvec (1, tmp), 9);
if (!scratch)
scratch = gen_reg_rtx (HImode);
emit_insn (gen_rtx_SET (VOIDmode, scratch, tmp2));
/* In the unordered case, we have to check C2 for NaN's, which
@ -5357,7 +5361,7 @@ ix86_expand_compare (code, second_test, bypass_test)
*bypass_test = NULL_RTX;
if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_FLOAT)
ret = ix86_expand_fp_compare (code, op0, op1, gen_reg_rtx (HImode),
ret = ix86_expand_fp_compare (code, op0, op1, NULL_RTX,
second_test, bypass_test);
else
ret = ix86_expand_int_compare (code, op0, op1);

4
gcc/config/i386/i386.h
View file

@ -2869,7 +2869,9 @@ do { long l; \
{"fcmov_comparison_operator", {EQ, NE, LTU, GTU, LEU, GEU, UNORDERED, \
ORDERED, LT, UNLT, GT, UNGT, LE, UNLE, \
GE, UNGE, LTGT, UNEQ}}, \
{"sse_comparison_operator", {EQ, LT, LE, UNORDERED }}, \
{"sse_comparison_operator", {EQ, LT, LE, UNORDERED, NE, UNGE, UNGT, \
ORDERED, UNEQ, UNLT, UNLE, LTGT, GE, GT \
}}, \
{"ix86_comparison_operator", {EQ, NE, LE, LT, GE, GT, LEU, LTU, GEU, \
GTU, UNORDERED, ORDERED, UNLE, UNLT, \
UNGE, UNGT, LTGT, UNEQ }}, \

9
gcc/config/i386/i386.md
View file

@ -4450,7 +4450,8 @@
(define_split
[(set (match_operand 0 "register_operand" "")
(float (match_operand 1 "register_operand" "")))]
"reload_completed && FLOAT_MODE_P (GET_MODE (operands[0]))"
"reload_completed && FLOAT_MODE_P (GET_MODE (operands[0]))
&& FP_REG_P (operands[0])"
[(const_int 0)]
"
{
@ -12493,7 +12494,7 @@
(match_operand:SF 5 "nonimmediate_operand" "xm#f,xm#f,f#x,f#x,x#f,x#f,f#x,f#x,x#f,x#f")])
(match_operand:SF 2 "nonimmediate_operand" "x#fr,0#fr,f#fx,0#fx,f#fx,0#fx,rm#rx,0#rx,rm#rx,0#rx")
(match_operand:SF 3 "nonimmediate_operand" "x#fr,x#fr,0#fx,f#fx,0#fx,f#fx,0#fx,rm#rx,0#rx,rm#rx")))
(clobber (match_scratch:SF 6 "=2,&5,X,X,X,X,X,X,X,X"))
(clobber (match_scratch:SF 6 "=2,&4,X,X,X,X,X,X,X,X"))
(clobber (reg:CC 17))]
"TARGET_SSE
&& (GET_CODE (operands[2]) != MEM || GET_CODE (operands[3]) != MEM)"
@ -12506,7 +12507,7 @@
(match_operand:DF 5 "nonimmediate_operand" "xm#f,xm#f,f#x,f#x,x#f,x#f,f#x,f#x,x#f,x#f")])
(match_operand:DF 2 "nonimmediate_operand" "x#fr,0#fr,f#fx,0#fx,f#fx,0#fx,rm#rx,0#rx,rm#rx,0#rx")
(match_operand:DF 3 "nonimmediate_operand" "x#fr,x#fr,0#fx,f#fx,0#fx,f#fx,0#fx,rm#rx,0#rx,rm#rx")))
(clobber (match_scratch:DF 6 "=2,&5,X,X,X,X,X,X,X,X"))
(clobber (match_scratch:DF 6 "=2,&4,X,X,X,X,X,X,X,X"))
(clobber (reg:CC 17))]
"TARGET_SSE2
&& (GET_CODE (operands[2]) != MEM || GET_CODE (operands[3]) != MEM)"
@ -12547,7 +12548,7 @@
(match_operand 5 "nonimmediate_operand" "")])
(match_operand 2 "register_operand" "")
(match_operand 3 "register_operand" "")))
(clobber (match_dup 2))
(clobber (match_operand 6 "" ""))
(clobber (reg:CC 17))]
"SSE_REG_P (operands[0]) && reload_completed"
[(set (match_dup 4) (match_op_dup 1 [(match_dup 4) (match_dup 5)]))