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(beq0_di, bne0_di, bge0_di, blt0_di): Use cmpw #0 instead of tstl when

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testing address registers on the 68000.

From-SVN: r13728
This commit is contained in:
Richard Kenner 1997-03-17 17:21:25 -05:00
parent 0b364e61d3
commit a6096a27f6
1 changed files with 52 additions and 11 deletions
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63
gcc/config/m68k/m68k.md
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@ -5452,10 +5452,21 @@
return \"move%.l %0,%2\;or%.l %3,%2\;jeq %l1\";
#endif
operands[4] = gen_label_rtx();
if (TARGET_68020 || TARGET_5200)
#ifdef MOTOROLA
output_asm_insn (\"tst%.l %0\;jbne %l4\;tst%.l %3\;jbeq %l1\", operands);
output_asm_insn (\"tst%.l %0\;jbne %l4\;tst%.l %3\;jbeq %l1\", operands);
#else
output_asm_insn (\"tst%.l %0\;jne %l4\;tst%.l %3\;jeq %l1\", operands);
output_asm_insn (\"tst%.l %0\;jne %l4\;tst%.l %3\;jeq %l1\", operands);
#endif
else
#ifdef MOTOROLA
#ifdef SGS_CMP_ORDER
output_asm_insn (\"cmp%.w %0,%#0\;jbne %l4\;cmp%.w %3,%#0\;jbeq %l1\", operands);
#else
output_asm_insn (\"cmp%.w %#0,%0\;jbne %l4\;cmp%.w %#0,%3\;jbeq %l1\", operands);
#endif
#else
output_asm_insn (\"cmp%.w %#0,%0\;jne %l4\;cmp%.w %#0,%3\;jeq %l1\", operands);
#endif
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, \"L\",
CODE_LABEL_NUMBER (operands[4]));
@ -5489,7 +5500,13 @@
operands[3] = gen_rtx (REG, SImode, REGNO (operands[0]) + 1);
else
operands[3] = adj_offsettable_operand (operands[0], 4);
if (ADDRESS_REG_P (operands[0]))
if (!ADDRESS_REG_P (operands[0]))
#ifdef MOTOROLA
return \"move%.l %0,%2\;or%.l %3,%2\;jbne %l1\";
#else
return \"move%.l %0,%2\;or%.l %3,%2\;jne %l1\";
#endif
if (TARGET_68020 || TARGET_5200)
#ifdef MOTOROLA
return \"tst%.l %0\;jbne %l1\;tst%.l %3\;jbne %l1\";
#else
@ -5497,9 +5514,13 @@
#endif
else
#ifdef MOTOROLA
return \"move%.l %0,%2\;or%.l %3,%2\;jbne %l1\";
#ifdef SGS_CMP_ORDER
return \"cmp%.w %#0,%0\;jbne %l1\;cmp%.w %#0,%3\;jbne %l1\";
#else
return \"move%.l %0,%2\;or%.l %3,%2\;jne %l1\";
return \"cmp%.w %0,%#0\;jbne %l1\;cmp%.w %3,%#0\;jbne %l1\";
#endif
#else
return \"cmp%.w %#0,%0\;jne %l1\;cmp%.w %#0,%3\;jne %l1\";
#endif
} ")
@ -5536,10 +5557,20 @@
}
}
CC_STATUS_INIT;
#ifdef MOTOROLA
return \"tst%.l %0\;jbpl %l1\";
if (TARGET_68020 || TARGET_5200 || ! ADDRESS_REG_P (operands[0]))
output_asm_insn(\"tst%.l %0\", operands);
else
/* On an address reg, cmpw may replace cmpl. */
#ifdef SGS_CMP_ORDER
output_asm_insn(\"cmp%.w %0,%#0\", operands);
#else
return \"tst%.l %0\;jpl %l1\";
output_asm_insn(\"cmp%.w %#0,%0\", operands);
#endif
#ifdef MOTOROLA
return \"jbpl %l1\";
#else
return \"jpl %l1\";
#endif
} ")
@ -5576,10 +5607,20 @@
}
}
CC_STATUS_INIT;
#ifdef MOTOROLA
return \"tst%.l %0\;jbmi %l1\";
if (TARGET_68020 || TARGET_5200 || ! ADDRESS_REG_P (operands[0]))
output_asm_insn(\"tst%.l %0\", operands);
else
/* On an address reg, cmpw may replace cmpl. */
#ifdef SGS_CMP_ORDER
output_asm_insn(\"cmp%.w %0,%#0\", operands);
#else
return \"tst%.l %0\;jmi %l1\";
output_asm_insn(\"cmp%.w %#0,%0\", operands);
#endif
#ifdef MOTOROLA
return \"jbmi %l1\";
#else
return \"jmi %l1\";
#endif
} ")