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Commit 39a10a29 by Geoff Keating Committed by Geoffrey Keating
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rs6000.c (validate_condition_mode): New function. 

* config/rs6000/rs6000.c (validate_condition_mode): New function.
(branch_comparison_operator): Call validate_condition_mode to
abort rather than returning 0.
(branch_positive_comparison_operator): New function.
(scc_comparison_operator): Call validate_condition_mode to abort
rather than returning 0.
(ccr_bit): Call validate_condition_mode.  Update for
new branch scheme.
(print_operand): Delete %C modifier.  Update %E case
to use EQ bit not SO bit.
(rs6000_reverse_condition): New function.
(rs6000_generate_compare): New function.
(rs6000_emit_sCOND): New function.
(rs6000_emit_cbranch): New function.
(output_cbranch): The length of a long branch insn is
now only 8 bytes.  Add validate_condition_mode.  Use
rs6000_reverse_condition.  Remove cror generation.
* config/rs6000/rs6000.h: Update comments.
(PREDICATE_CODES): Add new predicate.  Update codes used
by branch_comparison_operator and scc_comparison_operator.
* config/rs6000/rs6000-protos.h: Add prototypes for
new external functions.
* config/rs6000/rs6000.md: Add new scheduling parameters
for cr_logical instructions.  Change length of branch
instructions.
(bCOND patterns): Call rs6000_emit_cbranch.
(sCOND patterns): Call rs6000_emit_sCOND.
(branch patterns): Change lengths to 4.
(cr logical patterns): New.

From-SVN: r36191
parent 6e92b232
Showing with 51 additions and 9 deletions
gcc/ChangeLog
2000-09-06 Geoff Keating <geoffk@cygnus.com>
* config/rs6000/rs6000.c (validate_condition_mode): New function.
(branch_comparison_operator): Call validate_condition_mode to
abort rather than returning 0.
(branch_positive_comparison_operator): New function.
(scc_comparison_operator): Call validate_condition_mode to abort
rather than returning 0.
(ccr_bit): Call validate_condition_mode. Update for
new branch scheme.
(print_operand): Delete %C modifier. Update %E case
to use EQ bit not SO bit.
(rs6000_reverse_condition): New function.
(rs6000_generate_compare): New function.
(rs6000_emit_sCOND): New function.
(rs6000_emit_cbranch): New function.
(output_cbranch): The length of a long branch insn is
now only 8 bytes. Add validate_condition_mode. Use
rs6000_reverse_condition. Remove cror generation.
* config/rs6000/rs6000.h: Update comments.
(PREDICATE_CODES): Add new predicate. Update codes used
by branch_comparison_operator and scc_comparison_operator.
* config/rs6000/rs6000-protos.h: Add prototypes for
new external functions.
* config/rs6000/rs6000.md: Add new scheduling parameters
for cr_logical instructions. Change length of branch
instructions.
(bCOND patterns): Call rs6000_emit_cbranch.
(sCOND patterns): Call rs6000_emit_sCOND.
(branch patterns): Change lengths to 4.
(cr logical patterns): New.
2000-09-06 Richard Henderson <rth@cygnus.com>
* config/i386/i386.md (call_pop): Fix test for setting
......
gcc/config/rs6000/rs6000-protos.h
......@@ -73,6 +73,8 @@ extern int expand_block_move PARAMS ((rtx[]));
extern int load_multiple_operation PARAMS ((rtx, enum machine_mode));
extern int store_multiple_operation PARAMS ((rtx, enum machine_mode));
extern int branch_comparison_operator PARAMS ((rtx, enum machine_mode));
extern int branch_positive_comparison_operator
PARAMS ((rtx, enum machine_mode));
extern int scc_comparison_operator PARAMS ((rtx, enum machine_mode));
extern int trap_comparison_operator PARAMS ((rtx, enum machine_mode));
extern int boolean_operator PARAMS ((rtx, enum machine_mode));
......@@ -87,6 +89,10 @@ extern enum reg_class secondary_reload_class PARAMS ((enum reg_class,
extern int ccr_bit PARAMS ((rtx, int));
extern void print_operand PARAMS ((FILE *, rtx, int));
extern void print_operand_address PARAMS ((FILE *, rtx));
extern enum rtx_code rs6000_reverse_condition PARAMS ((enum machine_mode,
enum rtx_code));
extern void rs6000_emit_sCOND PARAMS ((enum rtx_code, rtx));
extern void rs6000_emit_cbranch PARAMS ((enum rtx_code, rtx));
extern char * output_cbranch PARAMS ((rtx, const char *, int, rtx));
extern void output_toc PARAMS ((FILE *, rtx, int, enum machine_mode));
extern int rs6000_adjust_cost PARAMS ((rtx, rtx, rtx, int));
......
gcc/config/rs6000/rs6000.h
......@@ -2275,18 +2275,19 @@ do { \
For the RS/6000, we need separate modes when unsigned (logical) comparisons
are being done and we need a separate mode for floating-point. We also
use a mode for the case when we are comparing the results of two
comparisons. */
comparisons, as then only the EQ bit is valid in the register. */
#define EXTRA_CC_MODES \
CC(CCUNSmode, "CCUNS") \
CC(CCFPmode, "CCFP") \
CC(CCEQmode, "CCEQ")
/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
return the mode to be used for the comparison. For floating-point, CCFPmode
should be used. CCUNSmode should be used for unsigned comparisons.
CCEQmode should be used when we are doing an inequality comparison on
the result of a comparison. CCmode should be used in all other cases. */
/* Given a comparison code (EQ, NE, etc.) and the first operand of a
COMPARE, return the mode to be used for the comparison. For
floating-point, CCFPmode should be used. CCUNSmode should be used
for unsigned comparisons. CCEQmode should be used when we are
doing an inequality comparison on the result of a
comparison. CCmode should be used in all other cases. */
#define SELECT_CC_MODE(OP,X,Y) \
(GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT ? CCFPmode \
......@@ -2761,10 +2762,13 @@ do { \
{"branch_comparison_operator", {EQ, NE, LE, LT, GE, \
GT, LEU, LTU, GEU, GTU, \
UNORDERED, ORDERED, \
UNEQ, LTGT, \
UNGE, UNGT, UNLE, UNLT}}, \
UNGE, UNLE }}, \
{"branch_positive_comparison_operator", {EQ, LT, GT, LTU, GTU, \
UNORDERED }}, \
{"scc_comparison_operator", {EQ, NE, LE, LT, GE, \
GT, LEU, LTU, GEU, GTU}}, \
GT, LEU, LTU, GEU, GTU, \
UNORDERED, ORDERED, \
UNGE, UNLE }}, \
{"trap_comparison_operator", {EQ, NE, LE, LT, GE, \
GT, LEU, LTU, GEU, GTU}}, \
{"boolean_operator", {AND, IOR, XOR}}, \
......
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