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[simd] Implement load*_lane and store*_lane

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The Wasm SIMD specification has added new instructions that allow inserting to the lane of a vector from a memory location, and conversely, extracting from a lane of a vector to a memory location. The simplest implementation lowers these instructions, `load[8|16|32|64]_lane` and `store[8|16|32|64]_lane`, to a sequence of either `load + insertlane` or `extractlane + store` (in CLIF). With the new backend's pattern matching, we expect these CLIF sequences to compile as a single machine instruction (at least in x64).
This commit is contained in:
Andrew Brown
2021-03-08 09:49:44 -08:00
parent 8bd1c33fec
commit 352e51f68d
2 changed files with 33 additions and 25 deletions
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18
build.rs
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@@ -192,14 +192,6 @@ fn experimental_x64_should_panic(testsuite: &str, testname: &str, strategy: &str
("simd", "simd_i32x4_trunc_sat_f64x2") => return true,
("simd", "simd_i64x2_extmul_i32x4") => return true,
("simd", "simd_int_to_int_extend") => return true,
("simd", "simd_load16_lane") => return true,
("simd", "simd_load32_lane") => return true,
("simd", "simd_load64_lane") => return true,
("simd", "simd_load8_lane") => return true,
("simd", "simd_store16_lane") => return true,
("simd", "simd_store32_lane") => return true,
("simd", "simd_store64_lane") => return true,
("simd", "simd_store8_lane") => return true,
("simd", _) => return false,
_ => {}
}
@@ -234,15 +226,7 @@ fn ignore(testsuite: &str, testname: &str, strategy: &str) -> bool {
| ("simd", "simd_i32x4_extmul_i16x8")
| ("simd", "simd_i32x4_trunc_sat_f64x2")
| ("simd", "simd_i64x2_extmul_i32x4")
| ("simd", "simd_int_to_int_extend")
| ("simd", "simd_load16_lane")
| ("simd", "simd_load32_lane")
| ("simd", "simd_load64_lane")
| ("simd", "simd_load8_lane")
| ("simd", "simd_store16_lane")
| ("simd", "simd_store32_lane")
| ("simd", "simd_store64_lane")
| ("simd", "simd_store8_lane") => return true,
| ("simd", "simd_int_to_int_extend") => return true,
// These are only implemented on x64.
("simd", "simd_i64x2_arith2") | ("simd", "simd_boolean") => {