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compiler: add simd_ctpop intrinsic #125266

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merged 4 commits into from
May 21, 2024
Merged

compiler: add simd_ctpop intrinsic #125266

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1914c72
compiler: add simd_ctpop intrinsic
workingjubilee May 19, 2024
1185a64
miri: support simd_ctpop
workingjubilee May 20, 2024
9557b90
cg_clif: support simd_ctpop
workingjubilee May 20, 2024
213351a
clarify the second arg to llvm.ctlz and cttz
workingjubilee May 20, 2024
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miri: support simd_ctpop
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@workingjubilee
workingjubilee committed May 20, 2024
commit 1185a6486c1a982a0d39880f2e389bd2cb35f078
2 changes: 2 additions & 0 deletions src/tools/miri/src/intrinsics/simd.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
| "flog2"
| "flog10"
| "ctlz"
| "ctpop"
| "cttz"
| "bswap"
| "bitreverse"
Expand All @@ -68,6 +69,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
"round" => Op::Round(rustc_apfloat::Round::NearestTiesToAway),
"trunc" => Op::Round(rustc_apfloat::Round::TowardZero),
"ctlz" => Op::Numeric(sym::ctlz),
"ctpop" => Op::Numeric(sym::ctpop),
"cttz" => Op::Numeric(sym::cttz),
"bswap" => Op::Numeric(sym::bswap),
"bitreverse" => Op::Numeric(sym::bitreverse),
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15 changes: 15 additions & 0 deletions src/tools/miri/tests/pass/intrinsics/portable-simd.rs
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Expand Up @@ -505,6 +505,21 @@ fn simd_intrinsics() {
assert!(simd_reduce_all(i32x4::splat(-1)));
assert!(!simd_reduce_all(i32x2::from_array([0, -1])));

assert_eq!(
simd_ctlz(i32x4::from_array([0, i32::MAX, i32::MIN, -1_i32])),
i32x4::from_array([32, 1, 0, 0])
);

assert_eq!(
simd_ctpop(i32x4::from_array([0, i32::MAX, i32::MIN, -1_i32])),
i32x4::from_array([0, 31, 1, 32])
);

assert_eq!(
simd_cttz(i32x4::from_array([0, i32::MAX, i32::MIN, -1_i32])),
i32x4::from_array([32, 0, 31, 0])
);

assert_eq!(
simd_select(i8x4::from_array([0, -1, -1, 0]), a, b),
i32x4::from_array([1, 10, 10, 4])
Expand Down