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| author | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2019-12-11 15:53:26 +0000 |
|---|---|---|
| committer | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2019-12-11 15:53:26 +0000 |
| commit | 24f19ccb8907b8d2bafb905a5db1a3537084d522 (patch) | |
| tree | e9d47fd87244ef8769fad5d2f761509f19923247 /gas/config/tc-arm.c | |
| parent | 2e744276988acd52b967d2505c42ef170147b5f9 (diff) | |
| download | gdb-24f19ccb8907b8d2bafb905a5db1a3537084d522.zip gdb-24f19ccb8907b8d2bafb905a5db1a3537084d522.tar.gz gdb-24f19ccb8907b8d2bafb905a5db1a3537084d522.tar.bz2 | |
[gas][arm] Add -mwarn-restrict-it
Add a -m{no-}warn-restrict-it option to control IT related warnings in
ARMv8-A and ARMv8-R. This is disabled by default.
Committed on behalf of Wilco Dijkstra.
gas/ChangeLog:
2019-12-11 Wilco Dijkstra <wdijkstr@arm.com>
* config/tc-arm.c (warn_on_restrict_it): Add new variable.
(it_fsm_post_encode): Check warn_on_restrict_it.
(arm_option_table): Add -mwarn-restrict-it/-mno-warn-restrict-it.
* testsuite/gas/arm/armv8-2-fp16-scalar-bad.d: Add -mwarn-restrict-it.
* testsuite/gas/arm/armv8-2-fp16-scalar-bad-ext.d: Likewise.
* testsuite/gas/arm/armv8-a-bad.d: Likewise.
* testsuite/gas/arm/armv8-a-it-bad.d: Likewise.
* testsuite/gas/arm/armv8-r-bad.d: Likewise.
* testsuite/gas/arm/armv8-r-it-bad.d: Likewise.
* testsuite/gas/arm/sp-pc-validations-bad-t-v8a.d: Likewise.
* testsuite/gas/arm/udf.d: Likewise.
Diffstat (limited to 'gas/config/tc-arm.c')
| -rw-r--r-- | gas/config/tc-arm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index c4ffeee..e680f93 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -154,6 +154,7 @@ static int pic_code = FALSE; static int fix_v4bx = FALSE; /* Warn on using deprecated features. */ static int warn_on_deprecated = TRUE; +static int warn_on_restrict_it = FALSE; /* Understand CodeComposer Studio assembly syntax. */ bfd_boolean codecomposer_syntax = FALSE; @@ -22788,6 +22789,7 @@ it_fsm_post_encode (void) handle_pred_state (); if (now_pred.insn_cond + && warn_on_restrict_it && !now_pred.warn_deprecated && warn_on_deprecated && ARM_CPU_HAS_FEATURE (cpu_variant, arm_ext_v8) @@ -30529,6 +30531,11 @@ struct arm_option_table arm_opts[] = {"mwarn-deprecated", NULL, &warn_on_deprecated, 1, NULL}, {"mno-warn-deprecated", N_("do not warn on use of deprecated feature"), &warn_on_deprecated, 0, NULL}, + + {"mwarn-restrict-it", N_("warn about performance deprecated IT instructions" + " in ARMv8-A and ARMv8-R"), &warn_on_restrict_it, 1, NULL}, + {"mno-warn-restrict-it", NULL, &warn_on_restrict_it, 0, NULL}, + {"mwarn-syms", N_("warn about symbols that match instruction names [default]"), (int *) (& flag_warn_syms), TRUE, NULL}, {"mno-warn-syms", N_("disable warnings about symobls that match instructions"), (int *) (& flag_warn_syms), FALSE, NULL}, {NULL, NULL, NULL, 0, NULL} |