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[x64] Add i64x2.abs

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This instruction has a single instruction lowering in AVX512F/VL and a three instruction lowering in AVX but neither is currently supported in the x64 backend. To implement this, we instead subtract the vector from 0 and use a blending instruction to pick the lanes containing the absolute value.
This commit is contained in:
Andrew Brown
2021-03-02 09:54:19 -08:00
parent 3c57c1b2bc
commit 508f8fa5a9
6 changed files with 36 additions and 6 deletions
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5
build.rs
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@@ -183,7 +183,6 @@ fn experimental_x64_should_panic(testsuite: &str, testname: &str, strategy: &str
match (testsuite, testname) {
("simd", "simd_i8x16_arith2") => return true, // Unsupported feature: proposed simd operator I8x16Popcnt
("simd", "simd_i64x2_arith2") => return true, // Unsupported feature: proposed simd operator I64x2Abs
("simd", "simd_conversions") => return true, // unknown operator or unexpected token: tests/spec_testsuite/proposals/simd/simd_conversions.wast:724:6
("simd", "simd_i16x8_extadd_pairwise_i8x16") => return true,
("simd", "simd_i16x8_extmul_i8x16") => return true,
@@ -231,7 +230,6 @@ fn ignore(testsuite: &str, testname: &str, strategy: &str) -> bool {
// These are new instructions that are not really implemented in any backend.
("simd", "simd_i8x16_arith2")
| ("simd", "simd_i64x2_arith2")
| ("simd", "simd_conversions")
| ("simd", "simd_i16x8_extadd_pairwise_i8x16")
| ("simd", "simd_i16x8_extmul_i8x16")
@@ -250,6 +248,9 @@ fn ignore(testsuite: &str, testname: &str, strategy: &str) -> bool {
| ("simd", "simd_store64_lane")
| ("simd", "simd_store8_lane") => return true,
// These are only implemented on x64.
("simd", "simd_i64x2_arith2") => return !cfg!(feature = "experimental_x64"),
// These are only implemented on aarch64 and x64.
("simd", "simd_i64x2_cmp")
| ("simd", "simd_f32x4_pmin_pmax")