eegcc sn (ps2) cc1plus.exe emits wrong built-in function call for 64bits operations

[AngheloAlf]

From what I have seen cc1plus.exe is emitting a __mulll3 call instead of a __muldi3 call for 64 bits multiplications. From a quick test other 64 bits operations seems to present the same issue.

Minimal reproducer:

// test.cpp
unsigned long test_mul(unsigned long a, unsigned long b) {
    return a * b;
}

Produces this under wibo:

	.file	1 "test.cpp"
gcc2_compiled.:
__gnu_compiled_cplusplus:
	.text
	.align	3
	.globl	test_mul__FUlUl
	.text
	.ent	test_mul__FUlUl
test_mul__FUlUl:
	.frame	$sp,16,$31		# vars= 0, regs= 2/0, args= 0, extra= 0
	.mask	0x80000000,-16
	.fmask	0x00000000,0
	subu	$sp,$sp,16
	sq $31,0($sp)
	jal	__mulll3
	lq $31,0($sp)
	.set	noreorder
	.set	nomacro
	j	$31
	addu	$sp,$sp,16
	.set	macro
	.set	reorder

	.end	test_mul__FUlUl

This is what is produced under wine

	.file	1 "test.cpp"
gcc2_compiled.:
__gnu_compiled_cplusplus:
	.text
	.align	3
	.globl	test_mul__FUlUl
	.text
	.ent	test_mul__FUlUl
test_mul__FUlUl:
	.frame	$sp,16,$31		# vars= 0, regs= 2/0, args= 0, extra= 0
	.mask	0x80000000,-16
	.fmask	0x00000000,0
	subu	$sp,$sp,16
	sq $31,0($sp)
	jal	__muldi3
	lq $31,0($sp)
	.set	noreorder
	.set	nomacro
	j	$31
	addu	$sp,$sp,16
	.set	macro
	.set	reorder

	.end	test_mul__FUlUl

(The only difference is the jal __mulll3 vs jal __muldi3)

Those were generated with the following flags:

ee/gcc/lib/gcc-lib/ee/2.95.3/cc1plus.exe -Os -quiet -g0 -fno-exceptions  test.cpp -o test_wibo.s

cc1plus.exe can be found here: https://github.com/AngheloAlf/sce_ps2_sdk_24/releases