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h8300.c (get_shift_alg): Make shift insn sequences end with a valid cc0 whenever possible.

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* config/h8300/h8300.c (get_shift_alg): Make shift insn
	sequences end with a valid cc0 whenever possible.

From-SVN: r60406
This commit is contained in:
Kazu Hirata 2002-12-22 15:02:30 +00:00 committed by Kazu Hirata
parent 8fb52ad1f0
commit a7612343f3
2 changed files with 32 additions and 22 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-12-22 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.c (get_shift_alg): Make shift insn
sequences end with a valid cc0 whenever possible.
2002-12-22 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md (negsf2): New.

49
gcc/config/h8300/h8300.c
View File

@ -2590,21 +2590,29 @@ get_shift_alg (shift_type, shift_mode, count, info)
{
case SHIFT_ASHIFT:
info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0";
info->shift1 = "shal.b\t%t0";
info->shift2 = "shal.b\t#2,%t0";
goto end;
case SHIFT_LSHIFTRT:
info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0";
info->shift1 = "shlr.b\t%s0";
info->shift2 = "shlr.b\t#2,%s0";
if (TARGET_H8300)
{
info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0";
info->shift1 = "shlr.b\t%s0";
}
else
{
info->special = "mov.b\t%t0,%s0\n\textu.w\t%T0";
}
goto end;
case SHIFT_ASHIFTRT:
if (TARGET_H8300)
info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0";
{
info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0";
info->shift1 = "shar.b\t%s0";
info->shift2 = "shar.b\t#2,%s0";
}
else
info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0";
info->shift1 = "shar.b\t%s0";
info->shift2 = "shar.b\t#2,%s0";
{
info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0";
}
goto end;
}
}
@ -2730,15 +2738,14 @@ get_shift_alg (shift_type, shift_mode, count, info)
}
goto end;
case SHIFT_LSHIFTRT:
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0";
if (TARGET_H8300)
{
info->shift1 = "shlr\t%x0\n\trotxr\t%w0";
info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0";
info->shift1 = "shlr\t%x0\n\trotxr\t%w0";
}
else
{
info->shift1 = "shlr.l\t%S0";
info->shift2 = "shlr.l\t#2,%S0";
info->special = "mov.w\t%e0,%f0\n\textu.l\t%S0";
}
goto end;
case SHIFT_ASHIFTRT:
@ -2750,8 +2757,6 @@ get_shift_alg (shift_type, shift_mode, count, info)
else
{
info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0";
info->shift1 = "shar.l\t%S0";
info->shift2 = "shar.l\t#2,%S0";
}
goto end;
}
@ -2814,9 +2819,9 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
case SHIFT_LSHIFTRT:
if (TARGET_H8300H)
info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\tsub.w\t%e0,%e0";
info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\textu.l\t%S0";
else
info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\trotl.l\t#2,%S0\n\tsub.w\t%e0,%e0";
info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\trotl.l\t#2,%S0\n\textu.l\t%S0";
info->shift1 = "";
info->shift2 = "";
goto end;
@ -2838,9 +2843,9 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
case SHIFT_LSHIFTRT:
if (TARGET_H8300H)
info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\tsub.w\t%e0,%e0";
info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\textu.l\t%S0";
else
info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\trotl.l\t%S0\n\tsub.w\t%e0,%e0";
info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\trotl.l\t%S0\n\textu.l\t%S0";
info->shift1 = "";
info->shift2 = "";
goto end;
@ -2862,9 +2867,9 @@ get_shift_alg (shift_type, shift_mode, count, info)
goto end;
case SHIFT_LSHIFTRT:
if (TARGET_H8300H)
info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\tsub.w\t%e0,%e0";
info->special = "sub.w\t%f0,%f0\n\trotl.l\t%S0\n\trotl.l\t%S0\n\textu.l\t%S0";
else
info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\tsub.w\t%e0,%e0";
info->special = "sub.w\t%f0,%f0\n\trotl.l\t#2,%S0\n\textu.l\t%S0";
info->shift1 = "";
info->shift2 = "";
goto end;
@ -2900,7 +2905,7 @@ get_shift_alg (shift_type, shift_mode, count, info)
info->special = "shll.l\t%S0\n\txor.l\t%S0,%S0\n\trotxl.l\t%S0";
goto end;
case SHIFT_ASHIFTRT:
info->special = "shll\t%e0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0";
info->special = "shll\t%e0\n\tsubx\t%w0,%w0\n\texts.w\t%T0\n\texts.l\t%S0";
goto end;
}
}