[Bug target/41900] call *%esp shouldn't be generated because of CPU errata

[uros at gcc dot gnu dot org]

------- Comment #7 from uros at gcc dot gnu dot org  2009-11-13 19:13 -------
Subject: Bug 41900

Author: uros
Date: Fri Nov 13 19:13:16 2009
New Revision: 154169

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=154169
Log:
2009-11-13  Uros Bizjak  <ubizjak@gmail.com>

        PR target/41900
        (*call_pop_1, *call_1, *call_value_pop_1, *call_value_1): Use "lsm"
        as operand 1 constraint.
        * config/i386/predicates.md (call_insn_operand): Depend on
        index_register_operand to avoid %esp register.

2009-11-13  Uros Bizjak  <ubizjak@gmail.com>

        Revert:
        2009-11-04  Uros Bizjak  <ubizjak@gmail.com>

        PR target/41900
        * config/i386/i386.h (ix86_arch_indices) <X86_ARCH_CALL_ESP>: New.
        (TARGET_CALL_ESP): New define.
        * config/i386/i386.c (initial_ix86_tune_features): Initialize
        X86_ARCH_CALL_ESP.
        * config/i386/i386.md (*call_pop_1_esp, *call_1_esp,
        *call_value_pop_1_esp, *call_value_1_esp): Rename from *call_pop_1,
        *call_1, *call_value_pop_1 and *call_value_1.  Depend on
        TARGET_CALL_ESP.
        (*call_pop_1, *call_1, *call_value_pop_1, *call_value_1):
        New patterns, use "lsm" as operand 1 constraint.
        * config/i386/predicates.md (call_insn_operand): Depend on
        index_register_operand for !TARGET_CALL_ESP to avoid %esp register.


Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/config/i386/i386.c
    branches/gcc-4_4-branch/gcc/config/i386/i386.h
    branches/gcc-4_4-branch/gcc/config/i386/i386.md
    branches/gcc-4_4-branch/gcc/config/i386/predicates.md


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41900