When the -fzero-call-used-regs command line option is used with an
unsupported value, indicate that it's a value problem instead of an
option problem.
Without the patch, the error is:
In file included from gcc/testsuite/c-c++-common/zero-scratch-regs-8.c:5:
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c: In function 'foo':
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c:10:1: sorry, unimplemented:
'-fzero-call-used-regs' not supported on this target
10 | }
| ^
With the patch, the error would be like this:
In file included from gcc/testsuite/c-c++-common/zero-scratch-regs-8.c:5:
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c: In function 'foo':
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c:10:1: sorry, unimplemented:
Argument 'all-arg' is not supported for '-fzero-call-used-regs' on this target
10 | }
| ^
2022-09-18 Torbjörn SVENSSON <torbjorn.svens...@foss.st.com>
gcc/ChangeLog:
* targhooks.cc (default_zero_call_used_regs): Improve sorry
message.
Signed-off-by: Torbjörn SVENSSON <torbjorn.svens...@foss.st.com>
---
gcc/targhooks.cc | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/gcc/targhooks.cc b/gcc/targhooks.cc
index b15ae19bcb6..8bfbc1d18f6 100644
--- a/gcc/targhooks.cc
+++ b/gcc/targhooks.cc
@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
#include "gimple.h"
#include "cfgloop.h"
#include "tree-vectorizer.h"
+#include "options.h"
bool
default_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED,
@@ -1181,9 +1182,21 @@ default_zero_call_used_regs (HARD_REG_SET
need_zeroed_hardregs)
static bool issued_error;
if (!issued_error)
{
+ const char *name = NULL;
+ for (unsigned int i = 0; zero_call_used_regs_opts[i].name != NULL;
+ ++i)
+ if (flag_zero_call_used_regs == zero_call_used_regs_opts[i].flag)
+ {
+ name = zero_call_used_regs_opts[i].name;
+ break;
+ }
+
+ if (!name)
+ name = "";
+
issued_error = true;
- sorry ("%qs not supported on this target",
- "-fzero-call-used-regs");
+ sorry ("Argument %qs is not supported for %qs on this target",
+ name, "-fzero-call-used-regs");
}
}
--
2.25.1
