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| author | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-06-30 16:40:19 +0000 |
|---|---|---|
| committer | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-06-30 16:40:19 +0000 |
| commit | 1c26a2eecb5e772ca2639b2201d593c9a4afdd69 (patch) | |
| tree | 4b11edb9006a44c882a5134990b54d722da2f220 /gcc/config/i386/i386.opt | |
| parent | 754e0869048f4c058982b3b75300fb0eb555b79d (diff) | |
| download | gcc-1c26a2eecb5e772ca2639b2201d593c9a4afdd69.tar.gz | |
IA MCU psABI support: GCC changes
This patch introduces basic IA MCU psABI support into GCC.
* configure.ac (ospace_frag): Enable for i?86*-*-elfiamcu
target.
* configure: Regenerate.
gcc/
* config.gcc: Support i[34567]86-*-elfiamcu target.
* config/i386/iamcu.h: New.
* config/i386/i386.opt: Add -miamcu.
* doc/invoke.texi: Document -miamcu.
* common/config/i386/i386-common.c (ix86_handle_option): Turn
off x87/MMX/SSE/AVX codegen for -miamcu.
* config/i386/i386-c.c (ix86_target_macros_internal): Define
__iamcu/__iamcu__ for -miamcu.
* config/i386/i386.h (PREFERRED_STACK_BOUNDARY_DEFAULT): Set
to MIN_STACK_BOUNDARY if TARGET_IAMCU is true.
(BIGGEST_ALIGNMENT): Set to 32 if TARGET_IAMCU is true.
* config/i386/i386.c (ix86_option_override_internal): Ignore and
warn -mregparm for Intel MCU. Turn on -mregparm=3 for Intel
MCU by default. Default long double to 64-bit for Intel MCU.
Turn on -freg-struct-return for Intel MCU. Issue an error when
-miamcu is used in 64-bit or x32 mode or if x87, MMX, SSE or
AVX is turned on.
(function_arg_advance_32): Pass value whose size is no larger
than 8 bytes in registers for Intel MCU.
(function_arg_32): Likewise.
(ix86_return_in_memory): Return value whose size is no larger
than 8 bytes in registers for Intel MCU.
(iamcu_alignment): New function.
(ix86_data_alignment): Call iamcu_alignment if TARGET_IAMCU is
true.
(ix86_local_alignment): Don't increase alignment for Intel MCU.
(x86_field_alignment): Return iamcu_alignment if TARGET_IAMCU is
true.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225197 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/i386/i386.opt')
| -rw-r--r-- | gcc/config/i386/i386.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt index dd46e26de39..042f3c1ab20 100644 --- a/gcc/config/i386/i386.opt +++ b/gcc/config/i386/i386.opt @@ -514,6 +514,10 @@ Clear all tune features mdump-tune-features Target RejectNegative Var(ix86_dump_tunes) Init(0) +miamcu +Target Report Mask(IAMCU) +Generate code that conforms to Intel MCU psABI + mabi= Target RejectNegative Joined Var(ix86_abi) Enum(calling_abi) Init(SYSV_ABI) Generate code that conforms to the given ABI |