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Expand -fzero-call-used-regs test to cover gcc 11.

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It turns out that gcc also has some problems with -fzero-call-used-regs,
at least v11 on mips.  Previously the test in OSSH_CHECK_CFLAG_COMPILE
was sufficient to catch it with "=all", but not sufficient for "=used".
Expand the testcase and include it in the other tests for good measure.
See bz#3629.  ok djm@.
This commit is contained in:
Darren Tucker 2023-11-21 16:19:29 +11:00
parent ff220d4010
commit 99a2df5e19
No known key found for this signature in database
1 changed files with 7 additions and 1 deletions
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@ -15,7 +15,7 @@ AC_DEFUN([OSSH_CHECK_CFLAG_COMPILE], [{
#include <stdlib.h>
#include <stdio.h>
/* Trivial function to help test for -fzero-call-used-regs */
void f(int n) {}
int f(int n) {return rand() % n;}
int main(int argc, char **argv) {
(void)argv;
/* Some math to catch -ftrapv problems in the toolchain */
@ -65,6 +65,8 @@ AC_DEFUN([OSSH_CHECK_CFLAG_LINK], [{
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
#include <stdio.h>
/* Trivial function to help test for -fzero-call-used-regs */
int f(int n) {return rand() % n;}
int main(int argc, char **argv) {
(void)argv;
/* Some math to catch -ftrapv problems in the toolchain */
@ -73,6 +75,7 @@ int main(int argc, char **argv) {
double m = l / 0.5;
long long int n = argc * 12345LL, o = 12345LL * (long long int)argc;
long long int p = n * o;
f(0);
printf("%d %d %d %f %f %lld %lld %lld\n", i, j, k, l, m, n, o, p);
exit(0);
}
@ -104,6 +107,8 @@ AC_DEFUN([OSSH_CHECK_LDFLAG_LINK], [{
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
#include <stdio.h>
/* Trivial function to help test for -fzero-call-used-regs */
int f(int n) {return rand() % n;}
int main(int argc, char **argv) {
(void)argv;
/* Some math to catch -ftrapv problems in the toolchain */
@ -112,6 +117,7 @@ int main(int argc, char **argv) {
double m = l / 0.5;
long long int n = argc * 12345LL, o = 12345LL * (long long int)argc;
long long p = n * o;
f(0);
printf("%d %d %d %f %f %lld %lld %lld\n", i, j, k, l, m, n, o, p);
exit(0);
}