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carith and more branch logic (#21002)

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* carith() function in exe1.c tests

* more branch logic
This commit is contained in:
Walter Bright 2025-03-15 15:33:30 -07:00 • committed by GitHub
parent 142d509af2
commit 7d3293c45d
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1 changed files with 14 additions and 10 deletions
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24
compiler/src/dmd/backend/arm/cod3.d
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@ -109,7 +109,8 @@ void REGSAVE_restore(const ref REGSAVE regsave, ref CodeBuilder cdb, reg_t reg,
// https://www.scs.stanford.edu/~zyedidia/arm64/b_cond.html
bool isBranch(uint ins) { return (ins & ((0xFF << 24) | (1 << 4))) == ((0x54 << 24) | (0 << 4)); }
// https://www.scs.stanford.edu/~zyedidia/arm64/bc_cond.html
bool isBranch(uint ins) { return (ins & 0xFF00_0000) == 0x5400_0000; }
enum MARS = true;
@ -1496,7 +1497,7 @@ printf("offset: %lld localsize: %lld REGSIZE*2: %d\n", offset, localsize, REGSIZ
break;
default:
if (0) printf("FL: %s\n", fl_str(c.IFL1));
if (1) printf("FL: %s\n", fl_str(c.IFL1));
assert(0);
}
}
@ -1517,10 +1518,10 @@ printf("offset: %lld localsize: %lld REGSIZE*2: %d\n", offset, localsize, REGSIZ
@trusted
void jmpaddr(code* c)
{
code* ci,cn,ctarg,cstart;
targ_size_t ad;
//printf("jmpaddr()\n");
code* ci,cn,ctarg,cstart;
uint ad;
cstart = c; /* remember start of code */
while (c)
{
@ -1538,7 +1539,7 @@ void jmpaddr(code* c)
}
if (!ci)
goto Lbackjmp; // couldn't find it
c.Iop |= cast(uint)(ad >> 2) << 5;
c.Iop |= (ad >> 2) << 5;
c.IFL1 = FL.unde;
}
if (op == LOOP && c.IFL1 == FL.code) /* backwards refs */
@ -1555,7 +1556,7 @@ void jmpaddr(code* c)
ad += calccodsize(ci);
ci = code_next(ci);
}
c.Iop = cast(uint)(-(ad >> 2)) << 5;
c.Iop = (-(ad >> 2)) << 5;
c.IFL1 = FL.unde;
}
c = code_next(c);
@ -1605,8 +1606,7 @@ uint calccodsize(code* c)
@trusted
uint codout(int seg, code* c, Barray!ubyte* disasmBuf, ref targ_size_t framehandleroffset)
{
code* cn;
uint flags;
//printf("codout()\n");
debug
if (debugc) printf("codout(%p), Coffset = x%llx\n",c,cast(ulong)Offset(seg));
@ -1618,6 +1618,9 @@ uint codout(int seg, code* c, Barray!ubyte* disasmBuf, ref targ_size_t framehand
ggen.framehandleroffset = framehandleroffset;
ggen.disasmBuf = disasmBuf;
code* cn;
uint flags;
for (; c; c = code_next(c))
{
debug
@ -1681,7 +1684,8 @@ uint codout(int seg, code* c, Barray!ubyte* disasmBuf, ref targ_size_t framehand
if (ggen.available() < 4)
ggen.flush();
if (c.IFL1 == FL.block) // branch to a block - compute offset
if (isBranch(op) && c.IFL1 == FL.block)
{
ggen.flush();
int ad = cast(int)(c.IEV1.Vblock.Boffset - ggen.offset);