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| author | DevJPM <jean-pierre.muench@web.de> | 2020-10-26 08:15:23 +0100 |
|---|---|---|
| committer | DevJPM <jean-pierre.muench@web.de> | 2020-10-26 08:36:14 +0100 |
| commit | 3daa93f555f4dab102da2a8d05cc38c4087166af (patch) | |
| tree | 890729ebc92c6e8e6085156c67914b1bd23209db /compiler/rustc_codegen_ssa/src | |
| parent | cd95e939bb9bef598be54067e93ac712d43fba71 (diff) | |
| download | rust-3daa93f555f4dab102da2a8d05cc38c4087166af.tar.gz rust-3daa93f555f4dab102da2a8d05cc38c4087166af.zip | |
Updated documentation, x86 feature detection testing, and removed LLVM 9 exclusive features
Updated the added documentation in llvm_util.rs to note which copies of LLVM need to be inspected. Removed avx512bf16 and avx512vp2intersect because they are unsupported before LLVM 9 with the build with external LLVM 8 being supported Re-introduced detection testing previously removed for un-requestable features tsc and mmx
Diffstat (limited to 'compiler/rustc_codegen_ssa/src')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/target_features.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/rustc_codegen_ssa/src/target_features.rs b/compiler/rustc_codegen_ssa/src/target_features.rs index cef96620884..e624768824b 100644 --- a/compiler/rustc_codegen_ssa/src/target_features.rs +++ b/compiler/rustc_codegen_ssa/src/target_features.rs @@ -55,7 +55,7 @@ const X86_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[ ("aes", None), ("avx", None), ("avx2", None), - ("avx512bf16", Some(sym::avx512_target_feature)), + //("avx512bf16", Some(sym::avx512_target_feature)), // this seems to be unsupported by the supported build with external LLVM 8, LLVM 9 should be sufficient though ("avx512bitalg", Some(sym::avx512_target_feature)), ("avx512bw", Some(sym::avx512_target_feature)), ("avx512cd", Some(sym::avx512_target_feature)), @@ -70,7 +70,7 @@ const X86_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[ ("avx512vbmi2", Some(sym::avx512_target_feature)), ("avx512vl", Some(sym::avx512_target_feature)), ("avx512vnni", Some(sym::avx512_target_feature)), - ("avx512vp2intersect", Some(sym::avx512_target_feature)), + //("avx512vp2intersect", Some(sym::avx512_target_feature)), // this seems to be unsupported by the supported build with external LLVM 8, LLVM 9 should be sufficient though ("avx512vpclmulqdq", Some(sym::avx512_target_feature)), ("avx512vpopcntdq", Some(sym::avx512_target_feature)), ("bmi1", None), |