[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 --- Comment #12 from David Harris --- Thank you for the speedy discovery and resolution.
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 Andrew Pinski changed: What|Removed |Added CC||david_harris at hmc dot edu --- Comment #11 from Andrew Pinski --- *** Bug 109687 has been marked as a duplicate of this bug. ***
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 Andrew Pinski changed: What|Removed |Added CC||iwfinlay at gmail dot com --- Comment #10 from Andrew Pinski --- *** Bug 108284 has been marked as a duplicate of this bug. ***
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 Kito Cheng changed: What|Removed |Added CC||kito at gcc dot gnu.org --- Comment #9 from Kito Cheng --- HI Andrew: That's would be great if you can back port to GCC 12 branch, and thanks for your quick fix :)
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED Target Milestone|--- |13.0 --- Comment #8 from Andrew Pinski --- Fixed for GCC 13 r13-1970-gffe4f55aa1bb18cc2793a4335450f34c33c9d01c If someone wants to backport it for GCC 12. Be my guest.
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 --- Comment #7 from Andrew Pinski --- So this has been broken since ZBS support was added in r12-4658-g4e1e0d79ecbe87 . Removing TARGET_64BIT from the check in splittable_const_int_operand fixes this testcase but I have not done any more testing.
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532
--- Comment #6 from Andrew Pinski ---
Oh why oh why:
/* Check whether the constant can be loaded in a single
instruction with zbs extensions. */
if (TARGET_64BIT && TARGET_ZBS && SINGLE_BIT_MASK_OPERAND (INTVAL (op)))
return false;
But:
if (TARGET_ZBS && SINGLE_BIT_MASK_OPERAND (value))
{
/* Simply BSETI. */
codes[0].code = UNKNOWN;
codes[0].value = value;
/* RISC-V sign-extends all 32bit values that live in a 32bit
register. To avoid paradoxes, we thus need to use the
sign-extended (negative) representation (-1 << 31) for the
value, if we want to build (1 << 31) in SImode. This will
then expand to an LUI instruction. */
if (mode == SImode && value == (HOST_WIDE_INT_1U << 31))
codes[0].value = (HOST_WIDE_INT_M1U << 31);
return 1;
}
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532
--- Comment #5 from Andrew Pinski ---
Even more reduced (this is why uninitialized variable was needed to form the
2048 :) ):
int g (void)
{
return 2048;
}
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532
--- Comment #4 from Andrew Pinski ---
Shorter testcase (uninitialized variable is required for the reduced testcase;
I don't know why yet):
int g (long B_e)
{
long A_e;
if (A_e != 2047)
A_e -= 1023;
return A_e + 1;
}
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 --- Comment #3 from Andrew Pinski --- Note with a non-modified sources fails with -O2 -march=rv32imac_zba_zbb_zbc_zbs
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 --- Comment #2 from Andrew Pinski --- Created attachment 53414 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53414&action=edit testcase from -freport-bug
[Bug target/106532] riscv fails to build enabling ZBA/ZBB/ZBC/ZBS by default for 32bit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106532 Andrew Pinski changed: What|Removed |Added Severity|normal |blocker Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org --- Comment #1 from Andrew Pinski --- Mine, will debug in a few minutes.
