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riscv-gcc-1
Commit fbf0fe41 by Kazu Hirata Committed by Kazu Hirata
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* config/h8300/h8300.c (h8300_adjust_insn_length): Clean up. 

From-SVN: r50207
parent 0010687d
Showing with 35 additions and 27 deletions
gcc/ChangeLog
2002-03-01 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (h8300_adjust_insn_length): Clean up.
Fri Mar 1 20:59:14 CET 2002 Jan Hubicka <jh@suse.cz> Fri Mar 1 20:59:14 CET 2002 Jan Hubicka <jh@suse.cz>
* toplev.c (rest_of_compilation): Delete dead jumptables before * toplev.c (rest_of_compilation): Delete dead jumptables before
......
gcc/config/h8300/h8300.c
...@@ -3367,34 +3367,38 @@ h8300_adjust_insn_length (insn, length) ...@@ -3367,34 +3367,38 @@ h8300_adjust_insn_length (insn, length)
else else
addr = XEXP (SET_DEST (pat), 0); addr = XEXP (SET_DEST (pat), 0);
/* On the H8/300, only one adjustment is necessary; if the if (TARGET_H8300)
address mode is register indirect, then this insn is two {
bytes shorter than indicated in the machine description. */ /* On the H8/300, we subtract the difference between the
if (TARGET_H8300 && GET_CODE (addr) == REG) actual length and the longest one, which is @(d:16,ERs). */
return -2;
/* On the H8/300H and H8/S, register indirect is 6 bytes shorter than
indicated in the machine description. */
if ((TARGET_H8300H || TARGET_H8300S)
&& GET_CODE (addr) == REG)
return -6;
/* On the H8/300H and H8/S, reg + d, for small displacements is /* @Rs is 2 bytes shorter than the longest. */
4 bytes shorter than indicated in the machine description. */ if (GET_CODE (addr) == REG)
if ((TARGET_H8300H || TARGET_H8300S) return -2;
&& GET_CODE (addr) == PLUS }
&& GET_CODE (XEXP (addr, 0)) == REG else
&& GET_CODE (XEXP (addr, 1)) == CONST_INT {
&& INTVAL (XEXP (addr, 1)) > -32768 /* On the H8/300H and H8/S, we subtract the difference
&& INTVAL (XEXP (addr, 1)) < 32767) between the actual length and the longest one, which is
return -4; @(d:24,ERs). */
/* On the H8/300H and H8/S, abs:16 is two bytes shorter than the /* @ERs is 6 bytes shorter than the longest. */
more general abs:24. */ if (GET_CODE (addr) == REG)
if ((TARGET_H8300H || TARGET_H8300S) return -6;
&& GET_CODE (addr) == SYMBOL_REF
&& TINY_DATA_NAME_P (XSTR (addr, 0))) /* @(d:16,ERs) is 6 bytes shorter than the longest. */
return -2; if (GET_CODE (addr) == PLUS
&& GET_CODE (XEXP (addr, 0)) == REG
&& GET_CODE (XEXP (addr, 1)) == CONST_INT
&& INTVAL (XEXP (addr, 1)) > -32768
&& INTVAL (XEXP (addr, 1)) < 32767)
return -4;
/* @aa:16 is 2 bytes shorter than the longest. */
if (GET_CODE (addr) == SYMBOL_REF
&& TINY_DATA_NAME_P (XSTR (addr, 0)))
return -2;
}
} }
/* Loading some constants needs adjustment. */ /* Loading some constants needs adjustment. */
......
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