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| author | Martin Liska <mliska@suse.cz> | 2022-10-25 06:28:44 +0200 |
|---|---|---|
| committer | Martin Liska <mliska@suse.cz> | 2022-10-26 12:48:53 +0200 |
| commit | d80b7744c6ae6f6d8ca1f56982a50d1888b8279f (patch) | |
| tree | f7fa6128c23015cd3ed3d5ae0b14bb4d76371bf0 /gcc/common | |
| parent | 4329d111f48cba9ea560fc0a36f4cb5a290decb2 (diff) | |
| download | gcc-d80b7744c6ae6f6d8ca1f56982a50d1888b8279f.zip gcc-d80b7744c6ae6f6d8ca1f56982a50d1888b8279f.tar.gz gcc-d80b7744c6ae6f6d8ca1f56982a50d1888b8279f.tar.bz2 | |
i386: add reset_cpu_feature
gcc/ChangeLog:
* common/config/i386/cpuinfo.h (has_cpu_feature): Add comment.
(reset_cpu_feature): New.
(get_zhaoxin_cpu): Use reset_cpu_feature.
Diffstat (limited to 'gcc/common')
| -rw-r--r-- | gcc/common/config/i386/cpuinfo.h | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/gcc/common/config/i386/cpuinfo.h b/gcc/common/config/i386/cpuinfo.h index d45451c..19ea713 100644 --- a/gcc/common/config/i386/cpuinfo.h +++ b/gcc/common/config/i386/cpuinfo.h @@ -76,6 +76,8 @@ has_cpu_feature (struct __processor_model *cpu_model, } } +/* Save FEATURE to either CPU_MODEL or CPU_FEATURES2. */ + static inline void set_cpu_feature (struct __processor_model *cpu_model, unsigned int *cpu_features2, @@ -100,6 +102,32 @@ set_cpu_feature (struct __processor_model *cpu_model, } } +/* Drop FEATURE from either CPU_MODEL or CPU_FEATURES2. */ + +static inline void +reset_cpu_feature (struct __processor_model *cpu_model, + unsigned int *cpu_features2, + enum processor_features feature) +{ + unsigned index, offset; + unsigned f = feature; + + if (f < 32) + { + /* The first 32 features. */ + cpu_model->__cpu_features[0] &= ~(1U << f); + } + else + { + /* The rest of features. cpu_features2[i] contains features from + (32 + i * 32) to (31 + 32 + i * 32), inclusively. */ + f -= 32; + index = f / 32; + offset = f % 32; + cpu_features2[index] &= ~(1U << offset); + } +} + /* Get the specific type of AMD CPU and return AMD CPU name. Return NULL for unknown AMD CPU. */ @@ -565,11 +593,11 @@ get_zhaoxin_cpu (struct __processor_model *cpu_model, cpu_model->__cpu_type = ZHAOXIN_FAM7H; if (model == 0x3b) { - cpu = "lujiazui"; - CHECK___builtin_cpu_is ("lujiazui"); - cpu_model->__cpu_features[0] &= ~(1U <<(FEATURE_AVX & 31)); - cpu_features2[0] &= ~(1U <<((FEATURE_F16C - 32) & 31)); - cpu_model->__cpu_subtype = ZHAOXIN_FAM7H_LUJIAZUI; + cpu = "lujiazui"; + CHECK___builtin_cpu_is ("lujiazui"); + reset_cpu_feature (cpu_model, cpu_features2, FEATURE_AVX); + reset_cpu_feature (cpu_model, cpu_features2, FEATURE_F16C); + cpu_model->__cpu_subtype = ZHAOXIN_FAM7H_LUJIAZUI; } break; default: |