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backend: Remove void initialization from code vars (#21206)

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Co-authored-by: Dennis Korpel <dennis@sarc.nl>
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Dennis 2025-04-11 12:37:20 +02:00 • committed by GitHub
parent 5fdf5f3c68
commit 09864e4c35
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GPG key ID: B5690EEEBB952194
6 changed files with 27 additions and 27 deletions
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8
compiler/src/dmd/backend/arm/cod2.d
View file

@ -1375,7 +1375,7 @@ void getoffset(ref CGstate cg, ref CodeBuilder cdb,elem* e,reg_t reg)
{
enum log = false;
if (log) printf("getoffset(e = %p, reg = %s)\n", e, regm_str(mask(reg)));
code cs = void;
code cs;
cs.Iflags = 0;
ubyte rex = 0;
cs.Irex = rex;
@ -1417,7 +1417,7 @@ static if (0)
* LEA DI,s@TLSGD[RIP]
*/
//assert(reg == DI);
code css = void;
code css;
css.Irex = REX | REX_W;
css.Iop = LEA;
css.Irm = modregrm(0,reg,5);
@ -1436,7 +1436,7 @@ static if (0)
*/
assert(reg == AX);
load_localgot(cdb);
code css = void;
code css;
css.Iflags = 0;
css.Iop = LEA; // LEA
css.Irex = 0;
@ -1466,7 +1466,7 @@ static if (0)
stack = 1;
}
code css = void;
code css;
css.Irex = rex;
css.Iop = 0x8B;
css.Irm = modregrm(0, 0, BPRM);

2
compiler/src/dmd/backend/x86/cg87.d
View file

@ -3806,7 +3806,7 @@ void cload87(ref CodeBuilder cdb, elem* e, ref regm_t outretregs)
}
tym_t ty = tybasic(e.Ety);
code cs = void;
code cs;
uint mf;
uint sz;
ubyte ldop;

2
compiler/src/dmd/backend/x86/cgxmm.d
View file

@ -1920,7 +1920,7 @@ void cloadxmm(ref CodeBuilder cdb, elem* e, ref regm_t pretregs)
if (pretregs == (mXMM0 | mXMM1) &&
e.Eoper != OPconst)
{
code cs = void;
code cs;
tym_t tym = tybasic(e.Ety);
tym_t ty = tym == TYcdouble ? TYdouble : TYfloat;
opcode_t opmv = xmmload(tym, xmmIsAligned(e));

24
compiler/src/dmd/backend/x86/cod2.d
View file

@ -285,7 +285,7 @@ void cdorth(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
// Handle the case of (var & const)
if (e2.Eoper == OPconst && el_signx32(e2))
{
code cs = void;
code cs;
cs.Iflags = 0;
cs.Irex = 0;
getlvalue(cdb,cs,e1,0);
@ -324,7 +324,7 @@ void cdorth(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
regm_t retregs;
if (isregvar(e2,retregs,reg))
{
code cs = void;
code cs;
cs.Iflags = 0;
cs.Irex = 0;
getlvalue(cdb,cs,e1,0);
@ -340,7 +340,7 @@ void cdorth(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
}
}
code cs = void;
code cs;
cs.Iflags = 0;
cs.Irex = 0;
@ -370,7 +370,7 @@ void cdorth(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
{
const inc = e.Ecount != 0;
nest += inc;
code csx = void;
code csx;
getlvalue(cdb,csx,e,0);
nest -= inc;
const regx = allocreg(cdb,pretregs,ty);
@ -943,7 +943,7 @@ void cdmul(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
const uint grex = rex << 16;
const OPER opunslng = I16 ? OPu16_32 : OPu32_64;
code cs = void;
code cs;
cs.Iflags = 0;
cs.Irex = 0;
@ -1331,7 +1331,7 @@ void cddiv(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
const ubyte rex = (I64 && sz == 8) ? REX_W : 0;
const uint grex = rex << 16;
code cs = void;
code cs;
cs.Iflags = 0;
cs.IFL2 = FL.unde;
cs.Irex = 0;
@ -4756,7 +4756,7 @@ void getoffset(ref CGstate cg, ref CodeBuilder cdb,elem* e,reg_t reg)
return dmd.backend.arm.cod2.getoffset(cg, cdb, e, reg);
//printf("getoffset(e = %p, reg = %s)\n", e, regm_str(mask(reg)));
code cs = void;
code cs;
cs.Iflags = 0;
ubyte rex = 0;
cs.Irex = rex;
@ -4783,7 +4783,7 @@ void getoffset(ref CGstate cg, ref CodeBuilder cdb,elem* e,reg_t reg)
* LEA DI,s@TLSGD[RIP]
*/
//assert(reg == DI);
code css = void;
code css;
css.Irex = REX | REX_W;
css.Iop = LEA;
css.Irm = modregrm(0,reg,5);
@ -4802,7 +4802,7 @@ void getoffset(ref CGstate cg, ref CodeBuilder cdb,elem* e,reg_t reg)
*/
assert(reg == AX);
load_localgot(cdb);
code css = void;
code css;
css.Iflags = 0;
css.Iop = LEA; // LEA
css.Irex = 0;
@ -4832,7 +4832,7 @@ void getoffset(ref CGstate cg, ref CodeBuilder cdb,elem* e,reg_t reg)
stack = 1;
}
code css = void;
code css;
css.Irex = rex;
css.Iop = 0x8B;
css.Irm = modregrm(0, 0, BPRM);
@ -5216,7 +5216,7 @@ void cdpost(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
}
//printf("cdpost(pretregs = %s)\n", regm_str(pretregs));
code cs = void;
code cs;
const op = e.Eoper; // OPxxxx
if (pretregs == 0) // if nothing to return
{
@ -5384,7 +5384,7 @@ if (config.exe & EX_windos)
}
else if (sz <= REGSIZE || tyfv(tyml))
{
code cs2 = void;
code cs2;
cs.Iop = 0x8B ^ isbyte;
regm_t retregs = possregs & ~idxregs & pretregs;

2
compiler/src/dmd/backend/x86/cod3.d
View file

@ -6546,7 +6546,7 @@ private void pinholeopt_unittest()
for (int i = 0; i < tests.length; i++)
{ CS* pin = &tests[i][0];
CS* pout = &tests[i][1];
code cs = void;
code cs;
memset(&cs, 0, cs.sizeof);
if (pin.model)
{

16
compiler/src/dmd/backend/x86/cod4.d
View file

@ -1726,7 +1726,7 @@ void cddivass(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
return;
}
code cs = void;
code cs;
//printf("cddivass(e=%p, pretregs = %s)\n",e,regm_str(pretregs));
char uns = tyuns(tyml) || tyuns(e2.Ety);
@ -1864,7 +1864,7 @@ void cddivass(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
ulong m;
int shpre;
int shpost;
code cs = void;
code cs;
if (udiv_coefficients(sz * 8, e2factor, &shpre, &m, &shpost))
{
@ -3752,7 +3752,7 @@ void cdshtlng(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
else if (e1.Eoper == OPvar ||
(e1.Eoper == OPind && !e1.Ecount))
{
code cs = void;
code cs;
if (I32 && op == OPu16_32 && config.flags4 & CFG4speed)
goto L2;
@ -4545,7 +4545,7 @@ void cdbscan(ref CGstate cg, ref CodeBuilder cdb, elem* e, ref regm_t pretregs)
const tyml = tybasic(e.E1.Ety);
const sz = _tysize[tyml];
assert(sz == 2 || sz == 4 || sz == 8);
code cs = void;
code cs;
if ((e.E1.Eoper == OPind && !e.E1.Ecount) || e.E1.Eoper == OPvar)
{
@ -4606,7 +4606,7 @@ void cdpopcnt(ref CGstate cg, ref CodeBuilder cdb,elem* e,ref regm_t pretregs)
const sz = _tysize[tyml];
assert(sz == 2 || sz == 4 || (sz == 8 && I64)); // no byte op
code cs = void;
code cs;
if ((e.E1.Eoper == OPind && !e.E1.Ecount) || e.E1.Eoper == OPvar)
{
getlvalue(cdb, cs, e.E1, 0, RM.load); // get addressing mode
@ -4748,7 +4748,7 @@ void cdcmpxchg(ref CGstate cg, ref CodeBuilder cdb, elem* e, ref regm_t pretregs
regm_t retregs = mCX|mBX;
scodelem(cgstate,cdb,e2.E2,retregs,mDX|mAX,false); // [CX,BX] = e2.E2
code cs = void;
code cs;
getlvalue(cdb,cs,e1,mCX|mBX|mAX|mDX); // get EA
getregs(cdb,mDX|mAX); // CMPXCHG destroys these regs
@ -4775,7 +4775,7 @@ void cdcmpxchg(ref CGstate cg, ref CodeBuilder cdb, elem* e, ref regm_t pretregs
regm_t retregs = (ALLREGS | mBP) & ~mAX;
scodelem(cgstate,cdb,e2.E2,retregs,mAX,false); // load rvalue in reg
code cs = void;
code cs;
getlvalue(cdb,cs,e1,mAX | retregs); // get EA
getregs(cdb,mAX); // CMPXCHG destroys AX
@ -4842,7 +4842,7 @@ void cdprefetch(ref CGstate cg, ref CodeBuilder cdb, elem* e, ref regm_t pretreg
freenode(e.E2);
code cs = void;
code cs;
getlvalue(cdb,cs,e1,0);
cs.Iop = op;
cs.Irm |= modregrm(0,reg,0);