Disable Compiler Flags (v0.2.1)

Overview

These flags explicitly disable behavior that would otherwise be active or inferred by the compiler.

Reference source: thrustc/thrustc_cli/src/help.rs

Back to command line reference

--disable-frame-pointer

Omit frame pointer emission regardless of optimization level.

Accepts value: no

Details

This can reduce overhead or follow platform-specific conventions, but it can also make debugging and stack walking harder.

Examples

thrustc main.thrust --disable-frame-pointer

Notes

No extra notes for this flag.

--disable-uwtable

Omit unwind table emission.

Accepts value: no

Details

This can reduce output size, but it may hurt exception handling support or stack tracing quality.

Examples

thrustc main.thrust --disable-uwtable

Notes

No extra notes for this flag.

--disable-direct-access-external-data

Force external data references to be accessed indirectly instead of directly.

Accepts value: no

Details

This changes how the backend reaches external data symbols and can matter for relocation or platform constraints.

Examples

thrustc main.thrust --disable-direct-access-external-data

Notes

No extra notes for this flag.

--disable-rtlib-got

Disable the runtime library dependency on the Global Offset Table.

Accepts value: no

Details

The original help text describes this as useful for some ARM non-PIC situations.

Examples

thrustc main.thrust --disable-rtlib-got

Notes

No extra notes for this flag.

--disable-safe-trapping-math

Allow trapping math operations instead of forcing safer behavior.

Accepts value: no

Details

This mainly affects floating-point code paths where the backend would otherwise avoid trap-prone behavior.

Examples

thrustc main.thrust --disable-safe-trapping-math

Notes

No extra notes for this flag.

--disable-safe-math

Disable safe integer math behavior.

Accepts value: no

Details

This allows overflow-oriented or less constrained math behavior at the cost of stronger guarantees.

Examples

thrustc main.thrust --disable-safe-math

Notes

No extra notes for this flag.

--disable-default-optimizations

Disable the default optimization work that would otherwise happen even without an explicit optimization flag.

Accepts value: no

Details

This is the spelling used in the v0.2.1 compiler help.

It disables baseline optimization behavior even when no explicit `-opt` flag is selected.

Examples

thrustc main.thrust --disable-default-optimizations

Notes

No extra notes for this flag.

--disable-all-sanitizers

Disable all sanitizers.

Accepts value: no

Details

Use this to clear sanitizer instrumentation globally for the current compilation.

Examples

thrustc main.thrust --disable-all-sanitizers

Notes

No extra notes for this flag.

--disable-all-cpu-features

Disable all CPU feature toggles.

Accepts value: no

Details

This clears CPU feature assumptions back toward a minimal baseline.

Examples

thrustc main.thrust --disable-all-cpu-features

Notes

No extra notes for this flag.