rust-lang/gcc
Sep 2025 – Sep 2025
1 Month active
Languages Used
C
Technical Skills
Compiler DevelopmentOptimizationRISC-V Architecture
Dusan Stojkovic
PROFILE
Dusan Stojkovic
During this period, work focused on enhancing the rust-lang/gcc repository by implementing a RISC-V rotation optimization that leverages the Zbb extension. The developer introduced a split pattern using rotate and XOR instructions, replacing a common rotation idiom with a more efficient two-instruction sequence. This optimization required updates to riscv.md and the addition of targeted tests under gcc.target/riscv to ensure correctness and coverage. The approach demonstrated expertise in compiler development, optimization techniques, and RISC-V architecture, utilizing C as the primary language. The result improved code generation efficiency for rotation-heavy code paths and expanded the test suite for RISC-V targets.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
1Total
Bugs
0
Commits
1
Features
1
Lines of code
42
Activity Months1
Your Network
281 peopleSame Organization
@rt-rk.com1
dragan.mladjenovicMember
Shared Repositories
280
Work History
September 2025
1 Commits • 1 Features
Sep 1, 2025Month: 2025-09. Key feature delivered: RISC-V rotation optimization using a split pattern (rotate + XOR) enabled by the Zbb extension, replacing a common rotation idiom with a two-instruction sequence. The change includes updates to riscv.md and new tests under gcc.target/riscv to validate the optimization. Commit d53f7ad85e8aefc6f0cdc0dd2f541db59d1a0cd2; patch: PR target/121778. Major bugs fixed: none reported this month. Overall impact: improved codegen efficiency for RISC-V, lower instruction counts in rotate-heavy code paths, and expanded test coverage. Technologies/skills demonstrated: GCC back-end optimization, RISC-V ISA knowledge (Zbb), pattern-based optimization, test-driven development, patch submission and review.
1 Commits • 1 Features
Sep 1, 2025Month: 2025-09. Key feature delivered: RISC-V rotation optimization using a split pattern (rotate + XOR) enabled by the Zbb extension, replacing a common rotation idiom with a two-instruction sequence. The change includes updates to riscv.md and new tests under gcc.target/riscv to validate the optimization. Commit d53f7ad85e8aefc6f0cdc0dd2f541db59d1a0cd2; patch: PR target/121778. Major bugs fixed: none reported this month. Overall impact: improved codegen efficiency for RISC-V, lower instruction counts in rotate-heavy code paths, and expanded test coverage. Technologies/skills demonstrated: GCC back-end optimization, RISC-V ISA knowledge (Zbb), pattern-based optimization, test-driven development, patch submission and review.
September 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
Compiler DevelopmentOptimizationRISC-V Architecture
Repositories Contributed To
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