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Fix aarch64 bootstrap compare failure. 

gcc/
	* combine.c (try_combine): Delete redundant i1 test.  Call
	prev_nonnote_nondebug_insn instead of prev_nonnote_insn.

From-SVN: r246253
This commit is contained in:
Jim Wilson 2017-03-18 05:37:52 +00:00 committed by Jim Wilson
parent a2bb525722
commit 2d6568bdcb
2 changed files with 8 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-03-17 Jim Wilson <jim.wilson@linaro.org>
* combine.c (try_combine): Delete redundant i1 test. Call
prev_nonnote_nondebug_insn instead of prev_nonnote_insn.
2017-03-17 Palmer Dabbelt <palmer@dabbelt.com
* doc/install.texi (Specific) <riscv32-*-elf>: Add riscv32-*-elf,

7
gcc/combine.c
View File

@ -2806,9 +2806,8 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
bitmap_set_bit (links_regset, ll->regno);
FOR_EACH_LOG_LINK (ll, i2)
bitmap_set_bit (links_regset, ll->regno);
if (i1)
FOR_EACH_LOG_LINK (ll, i1)
bitmap_set_bit (links_regset, ll->regno);
FOR_EACH_LOG_LINK (ll, i1)
bitmap_set_bit (links_regset, ll->regno);
if (i0)
FOR_EACH_LOG_LINK (ll, i0)
bitmap_set_bit (links_regset, ll->regno);
@ -4142,7 +4141,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
multi-word registers. Later, when fixing up LOG_LINKS, we
deal with the case where a pseudo use moved. */
if (!bitmap_empty_p (new_regs_in_i2)
&& prev_nonnote_insn (i3) != i2
&& prev_nonnote_nondebug_insn (i3) != i2
&& bitmap_first_set_bit (new_regs_in_i2) < FIRST_PSEUDO_REGISTER)
{
undo_all ();