| Non-Confidential |  PDF version | DUI0774J | ||
| ||||
| Home > Compiler Command-line Options > -fstrict-aliasing, -fno-strict-aliasing | ||||
| Non-Confidential | PDF version | DUI0774J | ||
| ||||
| Home > Compiler Command-line Options > -fstrict-aliasing, -fno-strict-aliasing | ||||
Instructs the compiler to apply the strictest aliasing rules available.
-fstrict-aliasing is implicitly
enabled at -O1 or higher. It is disabled at -O0, or when no optimization level is specified.
When optimizing at -O1 or higher,
this option can be disabled with -fno-strict-aliasing.
-fstrict-aliasing on
the command-line has no effect, since it is either implicitly enabled, or
automatically disabled, depending on the optimization level that is used.In the following example, -fstrict-aliasing is enabled:
armclang --target=aarch64-arm-none-eabi -O2 -c hello.c
In the following example, -fstrict-aliasing is disabled:
armclang --target=aarch64-arm-none-eabi -O2 -fno-strict-aliasing -c hello.c
In the following example, -fstrict-aliasing is disabled:
armclang --target=aarch64-arm-none-eabi -c hello.c
| Non-Confidential | PDF version | DUI0774J |
| Copyright © 2014–2017, 2019 Arm Limited or its affiliates. All rights reserved. |
| Home > Compiler Command-line Options > -fstrict-aliasing, -fno-strict-aliasing |