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riscv-gcc-1
Commit 17c60946 by Stephane Carrez Committed by Stephane Carrez
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m68hc11.md ("*lshrsi3_const"): Disable for 68HC12. 

	* config/m68hc11/m68hc11.md ("*lshrsi3_const"): Disable for 68HC12.
	("*lshrsi3"): Also accept an immediate for 68HC12.
	("*ashrsi3_const"): Likewise.
	("*ashrsi3"): Likewise.
	("*ashlsi3_const"): Likewise.
	("*ashlsi3"): Likewise.
	("cmphi_1_hc12"): Compare two hard register by pushing them and
	comparing with a pop; don't use a split for that.
	("cmphi split"): Disable compare split for 68HC12.

	* config/m68hc11/m68hc11.c (m68hc11_notice_update_cc): Invalidate
	the status operands if they have side effects.

From-SVN: r79068
parent 3e759eda
Showing with 55 additions and 17 deletions
gcc/ChangeLog
2004-03-07 Stephane Carrez <stcarrez@nerim.fr>
* config/m68hc11/m68hc11.md ("*lshrsi3_const"): Disable for 68HC12.
("*lshrsi3"): Also accept an immediate for 68HC12.
("*ashrsi3_const"): Likewise.
("*ashrsi3"): Likewise.
("*ashlsi3_const"): Likewise.
("*ashlsi3"): Likewise.
("cmphi_1_hc12"): Compare two hard register by pushing them and
comparing with a pop; don't use a split for that.
("cmphi split"): Disable compare split for 68HC12.
* config/m68hc11/m68hc11.c (m68hc11_notice_update_cc): Invalidate
the status operands if they have side effects.
2004-03-07 Kazu Hirata <kazu@cs.umass.edu>
* defaults.h (LEGITIMIZE_ADDRESS): Provide a default
......
gcc/config/m68hc11/m68hc11.c
......@@ -4082,6 +4082,12 @@ m68hc11_notice_update_cc (rtx exp, rtx insn ATTRIBUTE_UNUSED)
&& cc_status.value2
&& reg_overlap_mentioned_p (cc_status.value1, cc_status.value2))
cc_status.value2 = 0;
else if (cc_status.value1 && side_effects_p (cc_status.value1))
cc_status.value1 = 0;
else if (cc_status.value2 && side_effects_p (cc_status.value2))
cc_status.value2 = 0;
}
/* The current instruction does not affect the flags but changes
......
gcc/config/m68hc11/m68hc11.md
......@@ -308,7 +308,7 @@
[(set (cc0)
(compare (match_operand:HI 0 "hard_reg_operand" "")
(match_operand:HI 1 "hard_reg_operand" "")))]
"TARGET_M6812
"0 && TARGET_M6812
&& reload_completed && !(Z_REG_P (operands[0]) || Z_REG_P (operands[1]))"
[(set (mem:HI (pre_dec:HI (reg:HI SP_REGNUM))) (match_dup 1))
(set (cc0)
......@@ -344,8 +344,10 @@
cc_status.flags |= CC_REVERSED;
return \"cp%1\\t%0\";
}
else if (SP_REG_P (operands[1]))
return \"sts\\t2,-sp\n\\tcp%0\\t2,sp+\";
else if (H_REG_P (operands[1]))
return \"#\";
return \"psh%1\n\\tcp%0\\t2,sp+\";
else
return \"cp%0\\t%1\";
}")
......@@ -4615,10 +4617,10 @@
"")
(define_insn "*ashlsi3_const1"
[(set (match_operand:SI 0 "non_push_operand" "=D,D,D,m,*u")
(ashift:SI (match_operand:SI 1 "nonimmediate_operand" "0,m,*u,m,*u")
[(set (match_operand:SI 0 "non_push_operand" "=D,D,D,m,*u,*u")
(ashift:SI (match_operand:SI 1 "nonimmediate_operand" "0,m,*u,m,*u,m")
(const_int 1)))
(clobber (match_scratch:HI 2 "=X,X,X,&d,&d"))]
(clobber (match_scratch:HI 2 "=X,X,X,&d,&d,&d"))]
""
"*
{
......@@ -4674,7 +4676,7 @@
(ashift:SI (match_dup 0)
(match_operand:HI 1 "const_int_operand" "")))
(clobber (match_scratch:HI 2 "=y"))]
""
"TARGET_M6811 /* See *ashlsi3 note. */"
"*
{
CC_STATUS_INIT;
......@@ -4684,7 +4686,7 @@
(define_insn "*ashlsi3"
[(set (match_operand:SI 0 "register_operand" "+D,D")
(ashift:SI (match_dup 0)
(match_operand:HI 1 "general_operand" "y,m")))
(match_operand:HI 1 "general_operand" "y,mi")))
(clobber (match_scratch:HI 2 "=1,X"))]
""
"*
......@@ -4697,7 +4699,12 @@
is not enough register in class A_REGS.
Assuming that 'operands[1]' does not refer to the stack (which
is true for 68hc11 only, we save temporary the value of Y. */
is true for 68hc11 only, we save temporary the value of Y.
For 68HC12 we must also accept a constant because Z register is
disabled when compiling with -fomit-frame-pointer. We can come up
with a reload problem and the *lshrsi3_const pattern was disabled
for that reason. */
if (!Y_REG_P (operands[2]))
{
rtx ops[1];
......@@ -5084,7 +5091,7 @@
(ashiftrt:SI (match_dup 0)
(match_operand:HI 1 "const_int_operand" "")))
(clobber (match_scratch:HI 2 "=y"))]
""
"TARGET_M6811 /* See *ashrsi3 note. */"
"*
{
CC_STATUS_INIT;
......@@ -5094,7 +5101,7 @@
(define_insn "*ashrsi3"
[(set (match_operand:SI 0 "register_operand" "+D,D")
(ashiftrt:SI (match_dup 0)
(match_operand:HI 1 "general_operand" "y,m")))
(match_operand:HI 1 "general_operand" "y,mi")))
(clobber (match_scratch:HI 2 "=1,X"))]
""
"*
......@@ -5106,7 +5113,12 @@
is not enough register in class A_REGS.
Assuming that 'operands[1]' does not refer to the stack (which
is true for 68hc11 only, we save temporary the value of Y. */
is true for 68hc11 only, we save temporary the value of Y.
For 68HC12 we must also accept a constant because Z register is
disabled when compiling with -fomit-frame-pointer. We can come up
with a reload problem and the *lshrsi3_const pattern was disabled
for that reason. */
if (!Y_REG_P (operands[2]))
{
rtx ops[1];
......@@ -5367,10 +5379,10 @@
#")
(define_insn "*lshrsi3_const1"
[(set (match_operand:SI 0 "non_push_operand" "=D,D,D,m,*u")
(lshiftrt:SI (match_operand:SI 1 "nonimmediate_operand" "0,m,*u,m,*u")
[(set (match_operand:SI 0 "non_push_operand" "=D,D,D,m,*u,*u")
(lshiftrt:SI (match_operand:SI 1 "nonimmediate_operand" "0,m,*u,m,*u,m")
(const_int 1)))
(clobber (match_scratch:HI 2 "=X,X,X,&d,&d"))]
(clobber (match_scratch:HI 2 "=X,X,X,&d,&d,&d"))]
""
"*
{
......@@ -5421,7 +5433,7 @@
(lshiftrt:SI (match_dup 0)
(match_operand:HI 1 "const_int_operand" "")))
(clobber (match_scratch:HI 2 "=y"))]
""
"TARGET_M6811 /* See *lshrsi3 note. */"
"*
{
CC_STATUS_INIT;
......@@ -5431,7 +5443,7 @@
(define_insn "*lshrsi3"
[(set (match_operand:SI 0 "register_operand" "+D,D")
(lshiftrt:SI (match_dup 0)
(match_operand:HI 1 "general_operand" "y,m")))
(match_operand:HI 1 "general_operand" "y,mi")))
(clobber (match_scratch:HI 2 "=1,X"))]
""
"*
......@@ -5443,7 +5455,12 @@
is not enough register in class A_REGS.
Assuming that 'operands[1]' does not refer to the stack (which
is true for 68hc11 only, we save temporary the value of Y. */
is true for 68hc11 only, we save temporary the value of Y.
For 68HC12 we must also accept a constant because Z register is
disabled when compiling with -fomit-frame-pointer. We can come up
with a reload problem and the *lshrsi3_const pattern was disabled
for that reason. */
if (!Y_REG_P (operands[2]))
{
rtx ops[1];
......
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