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Fix IR_BUFPUT assembly.

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Thanks to Peter Cawley.
This commit is contained in:
Mike Pall 2018-01-14 13:57:00 +01:00
parent ea7071d3c3
commit 58d0dde0a2
1 changed files with 3 additions and 3 deletions
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6
src/lj_asm.c
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@ -1119,7 +1119,7 @@ static void asm_bufput(ASMState *as, IRIns *ir)
const CCallInfo *ci = &lj_ir_callinfo[IRCALL_lj_buf_putstr]; const CCallInfo *ci = &lj_ir_callinfo[IRCALL_lj_buf_putstr];
IRRef args[3]; IRRef args[3];
IRIns *irs; IRIns *irs;
int kchar = -1; int kchar = -129;
args[0] = ir->op1; /* SBuf * */ args[0] = ir->op1; /* SBuf * */
args[1] = ir->op2; /* GCstr * */ args[1] = ir->op2; /* GCstr * */
irs = IR(ir->op2); irs = IR(ir->op2);
@ -1127,7 +1127,7 @@ static void asm_bufput(ASMState *as, IRIns *ir)
if (irs->o == IR_KGC) { if (irs->o == IR_KGC) {
GCstr *s = ir_kstr(irs); GCstr *s = ir_kstr(irs);
if (s->len == 1) { /* Optimize put of single-char string constant. */ if (s->len == 1) { /* Optimize put of single-char string constant. */
kchar = strdata(s)[0]; kchar = (int8_t)strdata(s)[0]; /* Signed! */
args[1] = ASMREF_TMP1; /* int, truncated to char */ args[1] = ASMREF_TMP1; /* int, truncated to char */
ci = &lj_ir_callinfo[IRCALL_lj_buf_putchar]; ci = &lj_ir_callinfo[IRCALL_lj_buf_putchar];
} }
@ -1154,7 +1154,7 @@ static void asm_bufput(ASMState *as, IRIns *ir)
asm_gencall(as, ci, args); asm_gencall(as, ci, args);
if (args[1] == ASMREF_TMP1) { if (args[1] == ASMREF_TMP1) {
Reg tmp = ra_releasetmp(as, ASMREF_TMP1); Reg tmp = ra_releasetmp(as, ASMREF_TMP1);
if (kchar == -1) if (kchar == -129)
asm_tvptr(as, tmp, irs->op1); asm_tvptr(as, tmp, irs->op1);
else else
ra_allockreg(as, kchar, tmp); ra_allockreg(as, kchar, tmp);