OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[ARC] Deprecate q-class option. 

This option was used to control the short instruction selection.  However,
there is no difference in cycles if we use or not a short instruction,
and always someone wants a smaller program.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_conditional_register_usage): R0-R3 and
	R12-R15 are always in ARCOMPACT16_REGS register class.
	* config/arc/arc.opt (mq-class): Deprecate.
	* config/arc/constraint.md ("q"): Remove dependency on mq-class
	option.
	* doc/invoke.texi (mq-class): Update text.
	* common/config/arc/arc-common.c (arc_option_optimization_table):
	Update list.

testsuite/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* gcc.target/arc/nps400-1.c: Update test.
This commit is contained in:
Claudiu Zissulescu 2020-02-13 12:32:05 +02:00
parent e57764be55
commit 9ebba06b5b
8 changed files with 20 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2020-02-13 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_conditional_register_usage): R0-R3 and
R12-R15 are always in ARCOMPACT16_REGS register class.
* config/arc/arc.opt (mq-class): Deprecate.
* config/arc/constraint.md ("q"): Remove dependency on mq-class
option.
* doc/invoke.texi (mq-class): Update text.
* common/config/arc/arc-common.c (arc_option_optimization_table):
Update list.
2020-02-13 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_insn_cost): New function.

1
gcc/common/config/arc/arc-common.c
View File

@ -56,7 +56,6 @@ static const struct default_options arc_option_optimization_table[] =
{ OPT_LEVELS_SIZE, OPT_fbranch_count_reg, NULL, 0},
{ OPT_LEVELS_SIZE, OPT_fdelayed_branch, NULL, 0 },
{ OPT_LEVELS_SIZE, OPT_fsection_anchors, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 },
{ OPT_LEVELS_SIZE, OPT_mmillicode, NULL, 1 },

6
gcc/config/arc/arc.c
View File

@ -1427,9 +1427,6 @@ arc_override_options (void)
if (flag_no_common == 255)
flag_no_common = !TARGET_NO_SDATA_SET;
if (TARGET_MIXED_CODE)
TARGET_Q_CLASS = 1;
/* Check for small data option */
if (!global_options_set.x_g_switch_value && !TARGET_NO_SDATA_SET)
g_switch_value = TARGET_LL64 ? 8 : 4;
@ -1956,8 +1953,7 @@ arc_conditional_register_usage (void)
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
if (i < ILINK1_REG)
{
if ((TARGET_Q_CLASS || TARGET_RRQ_CLASS)
&& ((i <= R3_REG) || ((i >= R12_REG) && (i <= R15_REG))))
if ((i <= R3_REG) || ((i >= R12_REG) && (i <= R15_REG)))
arc_regno_reg_class[i] = ARCOMPACT16_REGS;
else
arc_regno_reg_class[i] = GENERAL_REGS;

2
gcc/config/arc/arc.opt
View File

@ -335,7 +335,7 @@ Target Warn(%qs is deprecated)
Enable compact casesi pattern.
mq-class
Target Var(TARGET_Q_CLASS)
Target Warn(%qs is deprecated)
Enable 'q' instruction alternatives.
mexpand-adddi

2
gcc/config/arc/constraints.md
View File

@ -53,7 +53,7 @@
(define_register_constraint "x" "R0_REGS"
"@code{R0} register.")
(define_register_constraint "q" "TARGET_Q_CLASS ? ARCOMPACT16_REGS : NO_REGS"
(define_register_constraint "q" "ARCOMPACT16_REGS"
"Registers usable in ARCompact 16-bit instructions: @code{r0}-@code{r3},
@code{r12}-@code{r15}")

2
gcc/doc/invoke.texi
View File

@ -17845,7 +17845,7 @@ while increasing the instruction count.
@item -mq-class
@opindex mq-class
Enable @samp{q} instruction alternatives.
Ths option is deprecated. Enable @samp{q} instruction alternatives.
This is the default for @option{-Os}.
@item -mRcq

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2020-02-13 Claudiu Zissulescu <claziss@synopsys.com>
* gcc.target/arc/nps400-1.c: Update test.
2020-02-13 Claudiu Zissulescu <claziss@synopsys.com>
* gcc.target/arc/or-cnst-size2.c: Update test.

2
gcc/testsuite/gcc.target/arc/nps400-1.c
View File

@ -1,6 +1,6 @@
/* { dg-do compile } */
/* { dg-skip-if "" { ! { clmcpu } } } */
/* { dg-options "-mcpu=nps400 -mq-class -mbitops -munaligned-access -mcmem -O2 -fno-strict-aliasing" } */
/* { dg-options "-mcpu=nps400 -mbitops -munaligned-access -mcmem -O2 -fno-strict-aliasing" } */
enum npsdp_mem_space_type {
NPSDP_EXTERNAL_MS = 1