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gcc/ChangeLog:
* common/config/i386/cpuinfo.h (get_available_features):
Detect USER_MSR.
* common/config/i386/i386-common.cc (OPTION_MASK_ISA2_USER_MSR_SET): New.
(OPTION_MASK_ISA2_USER_MSR_UNSET): Ditto.
(ix86_handle_option): Handle -musermsr.
* common/config/i386/i386-cpuinfo.h (enum processor_features):
Add FEATURE_USER_MSR.
* common/config/i386/i386-isas.h: Add ISA_NAME_TABLE_ENTRY for usermsr.
* config.gcc: Add usermsrintrin.h
* config/i386/cpuid.h (bit_USER_MSR): New.
* config/i386/i386-builtin-types.def:
Add DEF_FUNCTION_TYPE (VOID, UINT64, UINT64).
* config/i386/i386-builtins.cc (ix86_init_mmx_sse_builtins):
Add __builtin_urdmsr and __builtin_uwrmsr.
* config/i386/i386-builtins.h (ix86_builtins):
Add IX86_BUILTIN_URDMSR and IX86_BUILTIN_UWRMSR.
* config/i386/i386-c.cc (ix86_target_macros_internal):
Define __USER_MSR__.
* config/i386/i386-expand.cc (ix86_expand_builtin):
Handle new builtins.
* config/i386/i386-isa.def (USER_MSR): Add DEF_PTA(USER_MSR).
* config/i386/i386-options.cc (ix86_valid_target_attribute_inner_p):
Handle usermsr.
* config/i386/i386.md (urdmsr): New define_insn.
(uwrmsr): Ditto.
* config/i386/i386.opt: Add option -musermsr.
* config/i386/x86gprintrin.h: Include usermsrintrin.h
* doc/extend.texi: Document usermsr.
* doc/invoke.texi: Document -musermsr.
* doc/sourcebuild.texi: Document target usermsr.
* config/i386/usermsrintrin.h: New file.
gcc/testsuite/ChangeLog:
* gcc.target/i386/funcspec-56.inc: Add new target attribute.
* gcc.target/i386/x86gprintrin-1.c: Add -musermsr for 64bit target.
* gcc.target/i386/x86gprintrin-2.c: Ditto.
* gcc.target/i386/x86gprintrin-3.c: Ditto.
* gcc.target/i386/x86gprintrin-4.c: Add musermsr for 64bit target.
* gcc.target/i386/x86gprintrin-5.c: Ditto
* gcc.target/i386/user_msr-1.c: New test.
* gcc.target/i386/user_msr-2.c: Ditto.
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