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Auto merge of #45528 - alexcrichton:avx512, r=arielb1

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rustc: Add some more compatibility with AVX-512

* Increase the maximum vector size in the ABI calculations to ensure that
  AVX-512 operands are immediates.
* Add a few more `target_feature` matchings for AVX-512 features
This commit is contained in:
bors 2017-11-16 15:32:13 +00:00
commit 481b42b507
2 changed files with 8 additions and 3 deletions
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4
src/librustc_trans/cabi_x86_64.rs
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@ -27,8 +27,8 @@ enum Class {
#[derive(Clone, Copy, Debug)]
struct Memory;
// Currently supported vector size (AVX).
const LARGEST_VECTOR_SIZE: usize = 256;
// Currently supported vector size (AVX-512).
const LARGEST_VECTOR_SIZE: usize = 512;
const MAX_EIGHTBYTES: usize = LARGEST_VECTOR_SIZE / 64;
fn classify_arg<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, arg: &ArgType<'tcx>)

7
src/librustc_trans/llvm_util.rs
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@ -80,7 +80,12 @@ const X86_WHITELIST: &'static [&'static str] = &["avx\0", "avx2\0", "bmi\0", "bm
"ssse3\0", "tbm\0", "lzcnt\0", "popcnt\0",
"sse4a\0", "rdrnd\0", "rdseed\0", "fma\0",
"xsave\0", "xsaveopt\0", "xsavec\0",
"xsaves\0"];
"xsaves\0",
"avx512bw\0", "avx512cd\0",
"avx512dq\0", "avx512er\0",
"avx512f\0", "avx512ifma\0",
"avx512pf\0", "avx512vbmi\0",
"avx512vl\0", "avx512vpopcntdq\0"];
const HEXAGON_WHITELIST: &'static [&'static str] = &["hvx\0", "hvx-double\0"];