Match: Support .SAT_SUB with IMM op for form 1-4
This patch would like to support .SAT_SUB when one of the op
is IMM. Aka below 1-4 forms.
Form 1:
#define DEF_SAT_U_SUB_IMM_FMT_1(T, IMM) \
T __attribute__((noinline)) \
sat_u_sub_imm##IMM##_##T##_fmt_1 (T y) \
{ \
return IMM >= y ? IMM - y : 0; \
}
Form 2:
#define DEF_SAT_U_SUB_IMM_FMT_2(T, IMM) \
T __attribute__((noinline)) \
sat_u_sub_imm##IMM##_##T##_fmt_2 (T y) \
{ \
return IMM > y ? IMM - y : 0; \
}
Form 3:
#define DEF_SAT_U_SUB_IMM_FMT_3(T, IMM) \
T __attribute__((noinline)) \
sat_u_sub_imm##IMM##_##T##_fmt_3 (T x) \
{ \
return x >= IMM ? x - IMM : 0; \
}
Form 4:
#define DEF_SAT_U_SUB_IMM_FMT_4(T, IMM) \
T __attribute__((noinline)) \
sat_u_sub_imm##IMM##_##T##_fmt_4 (T x) \
{ \
return x > IMM ? x - IMM : 0; \
}
Take below form 1 as example:
DEF_SAT_U_SUB_OP0_IMM_FMT_1(uint32_t, 11)
Before this patch:
4 │ __attribute__((noinline))
5 │ uint64_t sat_u_sub_imm11_uint64_t_fmt_1 (uint64_t y)
6 │ {
7 │ uint64_t _1;
8 │ uint64_t _3;
9 │
10 │ ;; basic block 2, loop depth 0
11 │ ;; pred: ENTRY
12 │ if (y_2(D) <= 11)
13 │ goto <bb 3>; [50.00%]
14 │ else
15 │ goto <bb 4>; [50.00%]
16 │ ;; succ: 3
17 │ ;; 4
18 │
19 │ ;; basic block 3, loop depth 0
20 │ ;; pred: 2
21 │ _3 = 11 - y_2(D);
22 │ ;; succ: 4
23 │
24 │ ;; basic block 4, loop depth 0
25 │ ;; pred: 2
26 │ ;; 3
27 │ # _1 = PHI <0(2), _3(3)>
28 │ return _1;
29 │ ;; succ: EXIT
30 │
31 │ }
After this patch:
4 │ __attribute__((noinline))
5 │ uint64_t sat_u_sub_imm11_uint64_t_fmt_1 (uint64_t y)
6 │ {
7 │ uint64_t _1;
8 │
9 │ ;; basic block 2, loop depth 0
10 │ ;; pred: ENTRY
11 │ _1 = .SAT_SUB (11, y_2(D)); [tail call]
12 │ return _1;
13 │ ;; succ: EXIT
14 │
15 │ }
The below test suites are passed for this patch:
1. The rv64gcv fully regression tests.
2. The x86 bootstrap tests.
3. The x86 fully regression tests.
gcc/ChangeLog:
* match.pd: Add case 9 and case 10 for .SAT_SUB when one
of the op is IMM.
Signed-off-by: Pan Li <pan2.li@intel.com>
1 file changed
