gh-mirror/mikepaul-LuaJIT
1
0
Fork 0
mirror of https://github.com/LuaJIT/LuaJIT.git synced 2025-02-07 23:24:09 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Don't allocate unused 2nd result register in JIT compiler backend.

Browse Source
This commit is contained in:
Mike Pall 2016-02-10 18:51:02 +01:00
parent 3d4c9f9639
commit a443889677
4 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/lj_asm_arm.h
View File

@ -426,7 +426,7 @@ static void asm_gencall(ASMState *as, const CCallInfo *ci, IRRef *args)
static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci) static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci)
{ {
RegSet drop = RSET_SCRATCH; RegSet drop = RSET_SCRATCH;
int hiop = ((ir+1)->o == IR_HIOP); int hiop = ((ir+1)->o == IR_HIOP && !irt_isnil((ir+1)->t));
if (ra_hasreg(ir->r)) if (ra_hasreg(ir->r))
rset_clear(drop, ir->r); /* Dest reg handled below. */ rset_clear(drop, ir->r); /* Dest reg handled below. */
if (hiop && ra_hasreg((ir+1)->r)) if (hiop && ra_hasreg((ir+1)->r))

2
src/lj_asm_mips.h
View File

@ -291,7 +291,7 @@ static void asm_gencall(ASMState *as, const CCallInfo *ci, IRRef *args)
static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci) static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci)
{ {
RegSet drop = RSET_SCRATCH; RegSet drop = RSET_SCRATCH;
int hiop = ((ir+1)->o == IR_HIOP); int hiop = ((ir+1)->o == IR_HIOP && !irt_isnil((ir+1)->t));
if ((ci->flags & CCI_NOFPRCLOBBER)) if ((ci->flags & CCI_NOFPRCLOBBER))
drop &= ~RSET_FPR; drop &= ~RSET_FPR;
if (ra_hasreg(ir->r)) if (ra_hasreg(ir->r))

2
src/lj_asm_ppc.h
View File

@ -298,7 +298,7 @@ static void asm_gencall(ASMState *as, const CCallInfo *ci, IRRef *args)
static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci) static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci)
{ {
RegSet drop = RSET_SCRATCH; RegSet drop = RSET_SCRATCH;
int hiop = ((ir+1)->o == IR_HIOP); int hiop = ((ir+1)->o == IR_HIOP && !irt_isnil((ir+1)->t));
if ((ci->flags & CCI_NOFPRCLOBBER)) if ((ci->flags & CCI_NOFPRCLOBBER))
drop &= ~RSET_FPR; drop &= ~RSET_FPR;
if (ra_hasreg(ir->r)) if (ra_hasreg(ir->r))

2
src/lj_asm_x86.h
View File

@ -531,7 +531,7 @@ static void asm_gencall(ASMState *as, const CCallInfo *ci, IRRef *args)
static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci) static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci)
{ {
RegSet drop = RSET_SCRATCH; RegSet drop = RSET_SCRATCH;
int hiop = (LJ_32 && (ir+1)->o == IR_HIOP); int hiop = (LJ_32 && (ir+1)->o == IR_HIOP && !irt_isnil((ir+1)->t));
if ((ci->flags & CCI_NOFPRCLOBBER)) if ((ci->flags & CCI_NOFPRCLOBBER))
drop &= ~RSET_FPR; drop &= ~RSET_FPR;
if (ra_hasreg(ir->r)) if (ra_hasreg(ir->r))