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re PR rtl-optimization/10592 ([arm] caller-save incorrectly handles a reloaded SET_DEST operand) 

PR optimization/10592
* caller-save.c (mark_referenced_regs): Don't short-circuit a reg
or subreg in SET_DEST if it isn't a hard register.

From-SVN: r74747
This commit is contained in:
Richard Earnshaw 2003-12-17 18:20:44 +00:00 committed by Richard Earnshaw
parent 77e86c9109
commit 4d450e9ac8
2 changed files with 9 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2003-12-17 Richard Earnshaw <rearnsha@arm.com>
PR optimization/10592
* caller-save.c (mark_referenced_regs): Don't short-circuit a reg
or subreg in SET_DEST if it isn't a hard register.
2003-12-17 David Edelsohn <edelsohn@gnu.org>
* collect2.c (main): Add -fno-profile-arcs -fno-test-coverage

4
gcc/caller-save.c
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@ -568,8 +568,10 @@ mark_referenced_regs (rtx x)
{
x = SET_DEST (x);
code = GET_CODE (x);
if (code == REG || code == PC || code == CC0
if ((code == REG && REGNO (x) < FIRST_PSEUDO_REGISTER)
|| code == PC || code == CC0
|| (code == SUBREG && GET_CODE (SUBREG_REG (x)) == REG
&& REGNO (SUBREG_REG (x)) < FIRST_PSEUDO_REGISTER
/* If we're setting only part of a multi-word register,
we shall mark it as referenced, because the words
that are not being set should be restored. */