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arm: warn about deprecation of iwmmx in mmintrin.h

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GCC 13's changes file documents that iwmmx is deprecated.  Raise the bar
by warning when the mmintrin.h header is included by users, but provide
a way to suppress the warning.

gcc:
	* config/arm/mmintrin.h: Warn if this header is included without
	defining __ENABLE_DEPRECATED_IWMMXT.
This commit is contained in:
Richard Earnshaw 2024-02-26 17:20:58 +00:00
parent a0b1798042
commit a82ecdeacf
1 changed files with 3 additions and 0 deletions
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3
gcc/config/arm/mmintrin.h
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@ -28,6 +28,9 @@
#error mmintrin.h included without enabling WMMX/WMMX2 instructions (e.g. -march=iwmmxt or -march=iwmmxt2)
#endif
#ifndef __ENABLE_DEPRECATED_IWMMXT
#warning support for WMMX/WMMX2 is deprecated and will be removed in GCC 15. Define __ENABLE_DEPRECATED_IWMMXT to suppress this warning
#endif
#if defined __cplusplus
extern "C" {