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.
