Hello!
The fix for PR64037 [1] introduced severe problems, including
bootstrap failure on alphaev6-linux-gnu. Non-bootstrapped testsuite
results [2] can be compared with bootstrapped gcc with a revert [3].
As discussed in the PR, the problem was in a missed SI-DI zero_extend.
[1] https://gcc.gnu.org/ml/gcc-patches/2014-11/msg03405.html
[2] https://gcc.gnu.org/ml/gcc-testresults/2014-12/msg01068.html
[3] https://gcc.gnu.org/ml/gcc-testresults/2014-12/msg01069.html
The patch fixes the regression by reverting the above patch.
2014-12-09 Uros Bizjak <ubiz...@gmail.com>
PR bootstrap/64213
Revert:
2014-11-28 H.J. Lu <hongjiu...@intel.com>
PR rtl-optimization/64037
* combine.c (setup_incoming_promotions): Pass the argument
before any promotions happen to promote_function_mode.
* configure.tgt (x86_64): Tune -m32 multilib to generic.
testsuite/ChangeLog:
2014-12-09 Uros Bizjak <ubiz...@gmail.com>
PR bootstrap/64213
Revert:
2014-11-28 H.J. Lu <hongjiu...@intel.com>
PR rtl-optimization/64037
* g++.dg/pr64037.C: New test.
Patch was bootstrapped and regression tested on alphaev68-linux-gnu.
Approved by Richi in the PR audit trail, will be committed to mainline
SVN, 4.9 and 4.8 branch.
Uros.
Index: combine.c
===================================================================
--- combine.c (revision 218160)
+++ combine.c (revision 218161)
@@ -1561,8 +1561,8 @@ setup_incoming_promotions (rtx_insn *first)
uns3 = TYPE_UNSIGNED (DECL_ARG_TYPE (arg));
/* The mode and signedness of the argument as it is actually passed,
- after any TARGET_PROMOTE_FUNCTION_ARGS-driven ABI promotions. */
- mode3 = promote_function_mode (DECL_ARG_TYPE (arg), mode2, &uns3,
+ see assign_parm_setup_reg in function.c. */
+ mode3 = promote_function_mode (TREE_TYPE (arg), mode1, &uns1,
TREE_TYPE (cfun->decl), 0);
/* The mode of the register in which the argument is being passed. */
