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| author | Richard Earnshaw <rearnsha@gcc.gnu.org> | 2012-09-14 17:08:42 +0000 |
|---|---|---|
| committer | Richard Earnshaw <rearnsha@gcc.gnu.org> | 2012-09-14 17:08:42 +0000 |
| commit | cde43acdba16efdb6e4e4488ec19e4106b5396c7 (patch) | |
| tree | 95a34b6ced24ac7d8b25b3d0768dbbb429f9ac2e /gcc | |
| parent | 57132d23faff3f5e18d4773892070763bf6a89ca (diff) | |
| download | gcc-cde43acdba16efdb6e4e4488ec19e4106b5396c7.zip gcc-cde43acdba16efdb6e4e4488ec19e4106b5396c7.tar.gz gcc-cde43acdba16efdb6e4e4488ec19e4106b5396c7.tar.bz2 | |
Temporarily revert previous
From-SVN: r191306
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/reload.c | 10 |
2 files changed, 2 insertions, 13 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cbe531a..847b120 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,8 +1,3 @@ -2012-09-14 Richard Earnshaw <rearnsha@arm.com> - - * reload.c (find_dummy_reload): Don't use OUT as a reload reg - for IN if it overlaps a fixed register. - 2012-09-14 Eric Botcazou <ebotcazou@adacore.com> PR rtl-optimization/44194 diff --git a/gcc/reload.c b/gcc/reload.c index 2e41ed6..f4f3ed0 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -2036,12 +2036,7 @@ find_dummy_reload (rtx real_in, rtx real_out, rtx *inloc, rtx *outloc, However, we only ignore IN in its role as this reload. If the insn uses IN elsewhere and it contains OUT, that counts. We can't be sure it's the "same" operand - so it might not go through this reload. - - We also need to avoid using OUT if it, or part of it, is a - fixed register. Modifying such registers, even transiently, - may have undefined effects on the machine, such as modifying - the stack pointer. */ + so it might not go through this reload. */ saved_rtx = *inloc; *inloc = const0_rtx; @@ -2054,8 +2049,7 @@ find_dummy_reload (rtx real_in, rtx real_out, rtx *inloc, rtx *outloc, for (i = 0; i < nwords; i++) if (! TEST_HARD_REG_BIT (reg_class_contents[(int) rclass], - regno + i) - || fixed_regs[regno + i]) + regno + i)) break; if (i == nwords) |