[WIP] ssa: gen wrap code if c func has wrap abi

[visualfc]

compatible c abi struct calling.

• link c abi wrap
• callback abi wrap
• cgo mode abi wrap

typedef struct {
    int a[2];
    int b;
} info;

typedef struct {
    int a[128];
} info_big;

info demo1(info i, int n);
info_big big1(info_big b, int n);

define { i64, i32 } @demo1(i64 %0, i32 %1, i32 noundef %2) #0 
define void @big1(ptr dead_on_unwind noalias writable sret(%struct.info_big) align 4 %0, ptr noundef byval(%struct.info_big) align 8 %1, i32 noundef %2) #0 

generate wrap c code

extern typ_bff19efe64daa269a3f6dbc9d84697ff demo1(typ_bff19efe64daa269a3f6dbc9d84697ff p0, Int32 p1);
void llgo_wrapabi_demo1(typ_bff19efe64daa269a3f6dbc9d84697ff *p0, Int32 p1, typ_bff19efe64daa269a3f6dbc9d84697ff *r) {
    *r = demo1(*p0, p1);
}
typedef struct {Int32 f0[128];} typ_e34beeb28a63e25393901f28326380b9;
extern typ_e34beeb28a63e25393901f28326380b9 big1(typ_e34beeb28a63e25393901f28326380b9 p0, Int32 p1);
void llgo_wrapabi_big1(typ_e34beeb28a63e25393901f28326380b9 *p0, Int32 p1, typ_e34beeb28a63e25393901f28326380b9 *r) {
    *r = big1(*p0, p1);
}

[codecov]

Codecov Report

Attention: Patch coverage is 92.48826% with 16 lines in your changes missing coverage. Please review.

Project coverage is 97.48%. Comparing base (97a2824) to head (ff1e70d).

Files with missing lines	Patch %	Lines
ssa/wrapabi.go	90.00%	13 Missing ⚠️
ssa/type.go	71.42%	2 Missing ⚠️
ssa/expr.go	98.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #923      +/-   ##
==========================================
- Coverage   97.65%   97.48%   -0.17%     
==========================================
  Files          22       23       +1     
  Lines        6313     6487     +174     
==========================================
+ Hits         6165     6324     +159     
- Misses        128      143      +15     
  Partials       20       20              

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