[Bug target/66746] New: Failure to compile #include <x86intrin.h> with -miamcu

["thiago at kde dot org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66746

            Bug ID: 66746
           Summary: Failure to compile #include <x86intrin.h> with -miamcu
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: thiago at kde dot org
  Target Milestone: ---

Source code:
#include <x86intrin.h>

Compiling with:
  gcc -m32 -miamcu -c test.c

Produces a couple thousand errors, starting with:

/home/thiago/obj/gcc/gcc/include/ia32intrin.h:54:28: sorry, unimplemented: SSE
isn’t supported in Intel MCU psABI
 #pragma GCC target("sse4.2")
                            ^
/home/thiago/obj/gcc/gcc/include/ia32intrin.h:61:46: sorry, unimplemented: SSE
isn’t supported in Intel MCU psABI
 __crc32b (unsigned int __C, unsigned char __V)
                                              ^

I don't want to use SSE, but x86intrin.h has useful intrinsics for instructions
from as early as the 8086 (like __ror[bwd]). This header should compile.
>From gcc-bugs-return-491314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 03 00:46:11 2015
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66743] [5/6 regression] ICE: tree check: expected record_type or union_type or qual_union_type, have underlying_type in for_each_template_parm_r, at cp/pt.c:8234
Date: Fri, 03 Jul 2015 00:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf743

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Jul  3 00:45:34 2015
New Revision: 225365

URL: https://gcc.gnu.org/viewcvs?rev"5365&root=gcc&view=rev
Log:
        PR c++/66743
        * pt.c (for_each_template_parm_r) [UNDERLYING_TYPE]: Use
        TYPE_VALUES_RAW rather than TYPE_FIELDS.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/alias-decl-51.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c