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Improve bit permutation codegen - #164611
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Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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…uwer Rollup of 6 pull requests Successful merges: - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164578 (Don't ignore unknown LLVM diagnostics) - #164611 (Improve bit permutation codegen) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons)
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Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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…uwer Rollup of 14 pull requests Successful merges: - #163575 (core: Add examples and assembly tests for `abort_immediate`) - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163338 (MIR move elimination [4/6]: MoveElimination) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164578 (Don't ignore unknown LLVM diagnostics) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology)
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Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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…uwer Rollup of 13 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163338 (MIR move elimination [4/6]: MoveElimination) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164578 (Don't ignore unknown LLVM diagnostics) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology)
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…uwer Rollup of 13 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163338 (MIR move elimination [4/6]: MoveElimination) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164578 (Don't ignore unknown LLVM diagnostics) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology)
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Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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…uwer Rollup of 15 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163338 (MIR move elimination [4/6]: MoveElimination) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164540 (Minor optimizations around macro parsing) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164595 (Allow attributes in function trait parameters) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology)
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Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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…uwer Rollup of 14 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164540 (Minor optimizations around macro parsing) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164595 (Allow attributes in function trait parameters) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology)
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…uwer Rollup of 14 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164540 (Minor optimizations around macro parsing) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164595 (Allow attributes in function trait parameters) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology)
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Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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…uwer Rollup of 19 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163668 (Remap syntax contexts and expansion ids for det. metadata encoding) - #160404 (fd-views: AsRef<File>&Co. for BorrowedFd) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163317 (Stop useless caching of post-LTO artifact caching for fat LTO) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164507 (Encode HashMap and HashSet in deterministic order when an encoder requires determinism) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164540 (Minor optimizations around macro parsing) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164595 (Allow attributes in function trait parameters) - #164641 (Stabilize `slice_split_once`) - #164646 (Adjust rustfmt subtree sync docs to not use `--allow-noop` for now)
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Rollup of 20 pull requests Successful merges: - #163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - #163668 (Remap syntax contexts and expansion ids for det. metadata encoding) - #163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - #163317 (Stop useless caching of post-LTO artifact caching for fat LTO) - #163701 (add ReadDir::dir to get the directory handle of the underlying directory) - #164488 (Don't try to skip anything in `Skip::advance_by(0)`) - #164507 (Encode HashMap and HashSet in deterministic order when an encoder requires determinism) - #164611 (Improve bit permutation codegen) - #164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - #148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - #162668 (document that `!` does bitwise and logical negation) - #164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - #164509 (layout invariant: turn delayed bug back into proper assertion) - #164540 (Minor optimizations around macro parsing) - #164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - #164595 (Allow attributes in function trait parameters) - #164616 (Add test for VecDeque with a custom allocator) - #164629 (arch::breakpoint: avoid confusing 'equivalent' terminology) - #164641 (Stabilize `slice_split_once`) - #164646 (Adjust rustfmt subtree sync docs to not use `--allow-noop` for now)
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Rollup merge of #164611 - ywxt:int_bits, r=Amanieu Improve bit permutation codegen This PR allows AArch64 use `usra` to improves bit permutation codegen for `extract_bits`. For `extract_bits`, `(x ^ q) ^ (q >> n)` is equivalent to `(x & !masks[stage]) + (q >> n)`, since `q >> n` and `x ^ q` have no overlapping set bits. - `extract_bits` benchmarks Type | Mask | AArch64 XOR | AArch64 Add | Change -- | -- | -- | -- | -- u8 | constant | 102.64 | 49.74 | -51.54% u8 | invariant | 108.00 | 82.32 | -23.78% u8 | variable | 408.10 | 378.12 | -7.35% u16 | constant | 150.31 | 90.10 | -40.06% u16 | invariant | 176.41 | 126.84 | -28.10% u16 | variable | 692.12 | 619.49 | -10.49% u32 | constant | 201.93 | 131.06 | -35.10% u32 | invariant | 228.70 | 167.32 | -26.84% u32 | variable | 1022.22 | 1001.70 | -2.01% u64 | constant | 259.48 | 187.71 | -27.66% u64 | invariant | 288.77 | 211.51 | -26.75% u64 | variable | 1463.05 | 1413.12 | -3.41% u128 | constant | 331.50 | 331.50 | 0.00% u128 | invariant | 411.30 | 411.29 | -0.00% u128 | variable | 1489.14 | 1489.19 | +0.00%
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Rollup of 20 pull requests Successful merges: - rust-lang/rust#163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - rust-lang/rust#163668 (Remap syntax contexts and expansion ids for det. metadata encoding) - rust-lang/rust#163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - rust-lang/rust#163317 (Stop useless caching of post-LTO artifact caching for fat LTO) - rust-lang/rust#163701 (add ReadDir::dir to get the directory handle of the underlying directory) - rust-lang/rust#164488 (Don't try to skip anything in `Skip::advance_by(0)`) - rust-lang/rust#164507 (Encode HashMap and HashSet in deterministic order when an encoder requires determinism) - rust-lang/rust#164611 (Improve bit permutation codegen) - rust-lang/rust#164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - rust-lang/rust#148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - rust-lang/rust#162668 (document that `!` does bitwise and logical negation) - rust-lang/rust#164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - rust-lang/rust#164509 (layout invariant: turn delayed bug back into proper assertion) - rust-lang/rust#164540 (Minor optimizations around macro parsing) - rust-lang/rust#164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - rust-lang/rust#164595 (Allow attributes in function trait parameters) - rust-lang/rust#164616 (Add test for VecDeque with a custom allocator) - rust-lang/rust#164629 (arch::breakpoint: avoid confusing 'equivalent' terminology) - rust-lang/rust#164641 (Stabilize `slice_split_once`) - rust-lang/rust#164646 (Adjust rustfmt subtree sync docs to not use `--allow-noop` for now)
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Rollup of 20 pull requests Successful merges: - rust-lang/rust#163664 (Add new `RUSTC_BOOTSTRAP=-allow-unstable-compiler-flags` mode for testing stable compiler behavior in UI tests) - rust-lang/rust#163668 (Remap syntax contexts and expansion ids for det. metadata encoding) - rust-lang/rust#163104 ([debuginfo] Emit `usize` and `isize` as typedefs) - rust-lang/rust#163317 (Stop useless caching of post-LTO artifact caching for fat LTO) - rust-lang/rust#163701 (add ReadDir::dir to get the directory handle of the underlying directory) - rust-lang/rust#164488 (Don't try to skip anything in `Skip::advance_by(0)`) - rust-lang/rust#164507 (Encode HashMap and HashSet in deterministic order when an encoder requires determinism) - rust-lang/rust#164611 (Improve bit permutation codegen) - rust-lang/rust#164612 (std: Combine `is_powerpc64_feature_detected` into `is_powerpc_feature_detected`) - rust-lang/rust#148842 (Avoid incorrect lifetime suggestion involving `sym::anon`) - rust-lang/rust#162668 (document that `!` does bitwise and logical negation) - rust-lang/rust#164264 (lint: suggest `fXX::is_nan` for unsuffixed NaN comparisons) - rust-lang/rust#164509 (layout invariant: turn delayed bug back into proper assertion) - rust-lang/rust#164540 (Minor optimizations around macro parsing) - rust-lang/rust#164594 (rustdoc: Correctly handle inner `deprecated` attribute on modules) - rust-lang/rust#164595 (Allow attributes in function trait parameters) - rust-lang/rust#164616 (Add test for VecDeque with a custom allocator) - rust-lang/rust#164629 (arch::breakpoint: avoid confusing 'equivalent' terminology) - rust-lang/rust#164641 (Stabilize `slice_split_once`) - rust-lang/rust#164646 (Adjust rustfmt subtree sync docs to not use `--allow-noop` for now)
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This PR allows AArch64 use
usrato improves bit permutation codegen forextract_bits.For
extract_bits,(x ^ q) ^ (q >> n)is equivalent to(x & !masks[stage]) + (q >> n), sinceq >> nandx ^ qhave no overlapping set bits.extract_bitsbenchmarks