https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #19 from Li Pan ---
Thanks Juzhe. Here is another example
-
#include
extern size_t get_new_vl ();
size_t
__attribute__((noinline))
get_vl (size_t *c)
{
size_t vl = c[0] + c[1];
return vl;
}
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #18 from JuzheZhong ---
(In reply to Li Pan from comment #17)
> According to the V abi, looks like the asm code tries to save/restore the
> callee-saved registers when there is a call in function body.
>
> | Name| ABI Mnemonic |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #17 from Li Pan ---
According to the V abi, looks like the asm code tries to save/restore the
callee-saved registers when there is a call in function body.
| Name| ABI Mnemonic | Meaning | Preserved across
c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #16 from JuzheZhong ---
This issue is not fully fixed since the fixed patch only fixes ICE but there is
a regression in codegen:
https://godbolt.org/z/4nvxeqb6K
Terrible codege:
test(__rvv_uint64m4_t):
addisp,sp,-16
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
Andreas Schwab changed:
What|Removed |Added
Target Milestone|--- |14.0
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #14 from GCC Commits ---
The master branch has been updated by Pan Li :
https://gcc.gnu.org/g:e40a3d86511efcea71e9eadde8fb9f96be52f790
commit r14-9908-ge40a3d86511efcea71e9eadde8fb9f96be52f790
Author: Pan Li
Date: Thu Apr 11 09:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #13 from Li Pan ---
overriding TARGET_CLASS_LIKELY_SPILLED_P hook may not be a fix as it will
generate sorts of spill for the below sample code.
vbool2_t test_vmfge_vf_f16m8_b2(vfloat16m8_t op1, float16_t op2, size_t vl) {
return
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #12 from Li Pan ---
#include
extern unsigned long get_vl ();
#if 0
#else
vint32m1_t test (vint32m1_t a)
{
unsigned b;
return __riscv_vadd_vx_i32m1 (a, b, get_vl ()); // No ICE
}
vbool16_t test (vuint64m4_t a)
{
unsigned l
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #11 from Li Pan ---
(In reply to Li Pan from comment #10)
> The #define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN || (N) == FP_RETURN)
> of the riscv backend doesn't honor vector mode. Then the below part
>
> 370 ...
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #10 from Li Pan ---
The #define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN || (N) == FP_RETURN) of
the riscv backend doesn't honor vector mode. Then the below part
370 if (!targetm.calls.function_value_regno_p
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #9 from Uroš Bizjak ---
(In reply to Andrew Pinski from comment #2)
> /* If we didn't see a full return value copy, verify that there
>is a plausible reason for this. If some, but not all of the
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #8 from Li Pan ---
Find an even simpler code for reproduction.
#include
extern unsigned long get_vl ();
vbool16_t test (vuint64m4_t a)
{
unsigned long b;
return __riscv_vmsne_vx_u64m4_b16 (a, b, get_vl ());
}
../__RISC-V_INS
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #7 from Li Pan ---
Looks this commit from bisect acc22d56e140220e7dc6c138918cb6754b6d1c0b, will
take a look into it.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #6 from JuzheZhong ---
Definitely it is a regression:
https://compiler-explorer.com/z/e68x5sT9h
GCC 13.2 is ok, but GCC 14 ICE.
I think you should bisect first.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #5 from Li Pan ---
(In reply to Kito Cheng from comment #4)
> Reduced case:
> ```c
> typedef long c;
> #pragma riscv intrinsic "vector"
> template struct d {};
> struct e {
> using f = d<0>;
> };
> struct g {
> using f = e::f;
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #4 from Kito Cheng ---
Reduced case:
```c
typedef long c;
#pragma riscv intrinsic "vector"
template struct d {};
struct e {
using f = d<0>;
};
struct g {
using f = e::f;
};
template using h = g::f;
template long k(d);
vbool16_
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #3 from Li Pan ---
Reproduced from my side too.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
--- Comment #2 from Andrew Pinski ---
/* If we didn't see a full return value copy, verify that there
is a plausible reason for this. If some, but not all of the
return register is likely spilled, we ca
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114639
Kito Cheng changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Ever confirmed|0
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