[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709 --- Comment #13 from matoro --- Current state of this has expanded to more of the math tests. FAIL: math/test-double-fma FAIL: math/test-double-j0 FAIL: math/test-double-j1 FAIL: math/test-double-ldouble-fma FAIL: math/test-double-log FAIL: math/test-float32x-float64-fma FAIL: math/test-float32x-fma FAIL: math/test-float32x-j0 FAIL: math/test-float32x-j1 FAIL: math/test-float32x-log FAIL: math/test-float64-fma FAIL: math/test-float64-j0 FAIL: math/test-float64-j1 FAIL: math/test-float64-log FAIL: math/test-ldouble-fma FAIL: math/test-ldouble-j0 FAIL: math/test-ldouble-j1 FAIL: math/test-ldouble-log
[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709 John David Anglin changed: What|Removed |Added Last reconfirmed||2024-05-02 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW
[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709 Jakub Jelinek changed: What|Removed |Added Target Milestone|13.3|13.4 --- Comment #14 from Jakub Jelinek --- GCC 13.3 is being released, retargeting bugs to GCC 13.4.
[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c since r13-1268-g8c99e307b20c50
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709 Andreas K. Huettel changed: What|Removed |Added CC||dilfridge at gentoo dot org --- Comment #15 from Andreas K. Huettel --- (In reply to matoro from comment #13) > Current state of this has expanded to more of the math tests. > > FAIL: math/test-double-fma > FAIL: math/test-double-j0 > FAIL: math/test-double-j1 > FAIL: math/test-double-ldouble-fma > FAIL: math/test-double-log > FAIL: math/test-float32x-float64-fma > FAIL: math/test-float32x-fma > FAIL: math/test-float32x-j0 > FAIL: math/test-float32x-j1 > FAIL: math/test-float32x-log > FAIL: math/test-float64-fma > FAIL: math/test-float64-j0 > FAIL: math/test-float64-j1 > FAIL: math/test-float64-log > FAIL: math/test-ldouble-fma > FAIL: math/test-ldouble-j0 > FAIL: math/test-ldouble-j1 > FAIL: math/test-ldouble-log I think the log, j0, j1 failures have a different origin (the glibc testsuite needed an update of the ulps file). See for current results https://sourceware.org/glibc/wiki/Release/2.40#HPPA
[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c since r13-1268-g8c99e307b20c50
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709
--- Comment #16 from John David Anglin ---
Correct. I recently did a couple of updates to the test ulps and now
only the fma tests fail when building glibc with PA 1.1 code. Don't
know about PA 2.0.
I noticed that some RISCV processors have problems with underflow. I
adapted fdiv test to test glibc fma function:
dave@atlas:~$ cat fma-repro.c
#include
#include
#include
int main(void) {
if (fesetround (FE_DOWNWARD)) {
printf("ERROR: Failed to set rounding mode!\n");
return 1;
}
fma(-0x7.p-1024, 0x8.8p-4, -0x4p-1076);
if(fetestexcept (FE_UNDERFLOW)) {
printf("Failure: Exception Underflow is set!\n");
} else {
printf("Success: Exception Underflow is not set!!!\n");
}
}
dave@atlas:~$ gcc fma-repro.c -lm -std=c2x -o fma-repro -fno-builtin
dave@atlas:~$ ./fma-repro
Failure: Exception Underflow is set!
Option -fno-builtin is needed to ensure fma call isn't optimized away.
Test passes if it is optimized away.
