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| author | Daniel Cederman <cederman@gaisler.com> | 2015-09-28 05:30:31 +0000 |
|---|---|---|
| committer | Daniel Hellstrom <danielh@gcc.gnu.org> | 2015-09-28 07:30:31 +0200 |
| commit | a01a33a2dde5c0a69563431f3057621a2e74c62a (patch) | |
| tree | e7d3519f0ef06cb3b01f1a57b907f9aee0b604bc | |
| parent | 9cb00eb15a97e52eff396db89cefac6a9297604f (diff) | |
| download | gcc-a01a33a2dde5c0a69563431f3057621a2e74c62a.zip gcc-a01a33a2dde5c0a69563431f3057621a2e74c62a.tar.gz gcc-a01a33a2dde5c0a69563431f3057621a2e74c62a.tar.bz2 | |
Make muser-mode the default for LEON3
2015-09-28 Daniel Cederman <cederman@gaisler.com>
Make muser-mode the default for LEON3
The muser-mode flag causes the CASA instruction for LEON3 to use the
user mode ASI. This is the correct behavior for almost all LEON3 targets.
For this reason it makes sense to make user mode the default.
gcc/
* config/sparc/sparc.opt: Rename mask from USER_MODE to SV_MODE
and make it inverse to change default
* config/sparc/sync.md: Only use supervisor ASI for CASA when in
supervisor mode
* doc/invoke.texi: Document change of default
From-SVN: r228184
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/sparc/sparc.opt | 4 | ||||
| -rw-r--r-- | gcc/config/sparc/sync.md | 6 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 4 |
4 files changed, 15 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6eb3032..7fb87ea 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,13 @@ 2015-09-28 Daniel Cederman <cederman@gaisler.com> + * config/sparc/sparc.opt: Rename mask from USER_MODE to SV_MODE + and make it inverse to change default + * config/sparc/sync.md: Only use supervisor ASI for CASA when in + supervisor mode + * doc/invoke.texi: Document change of default + +2015-09-28 Daniel Cederman <cederman@gaisler.com> + * config/sparc/sparc.c (sparc_function_value_regno_p): Do not return true on %f0 for a target without FPU. * config/sparc/sparc.md (untyped_call): Do not save %f0 for a target diff --git a/gcc/config/sparc/sparc.opt b/gcc/config/sparc/sparc.opt index 93d24a6..85bf0bd 100644 --- a/gcc/config/sparc/sparc.opt +++ b/gcc/config/sparc/sparc.opt @@ -114,8 +114,8 @@ Target Optimize tail call instructions in assembler and linker muser-mode -Target Report Mask(USER_MODE) -Do not generate code that can only run in supervisor mode +Target Report InverseMask(SV_MODE) +Do not generate code that can only run in supervisor mode (default) mcpu= Target RejectNegative Joined Var(sparc_cpu_and_features) Enum(sparc_processor_type) Init(PROCESSOR_V7) diff --git a/gcc/config/sparc/sync.md b/gcc/config/sparc/sync.md index 7d00b10..2fabff5 100644 --- a/gcc/config/sparc/sync.md +++ b/gcc/config/sparc/sync.md @@ -222,10 +222,10 @@ UNSPECV_CAS))] "TARGET_LEON3" { - if (TARGET_USER_MODE) - return "casa\t%1 0xa, %2, %0"; /* ASI for user data space. */ - else + if (TARGET_SV_MODE) return "casa\t%1 0xb, %2, %0"; /* ASI for supervisor data space. */ + else + return "casa\t%1 0xa, %2, %0"; /* ASI for user data space. */ } [(set_attr "type" "multi")]) diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 407eb8e..50cc5201 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -21299,8 +21299,8 @@ in a performance loss, especially for floating-point code. @opindex muser-mode @opindex mno-user-mode Do not generate code that can only run in supervisor mode. This is relevant -only for the @code{casa} instruction emitted for the LEON3 processor. The -default is @option{-mno-user-mode}. +only for the @code{casa} instruction emitted for the LEON3 processor. This +is the default. @item -mno-faster-structs @itemx -mfaster-structs |