Update qsimd.h

Makes QT_COMPILER_USES effective for sve and avx2 Change-Id: I00ea499125089a2f3ba2845a66b69a534a1b1c0e Reviewed-by: Thiago Macieira <[email protected]>
qt · Oct 31, 2024 · 5585215 · 5585215
1 parent aa1293f
commit 5585215
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/src/corelib/global/qsimd.h b/src/corelib/global/qsimd.h
@@ -15,12 +15,14 @@
  * Supported instruction set extensions are:
  *   Flag      | Arch
  *  neon       | ARM
+ *  sve        | ARM
  *  mips_dsp   | mips
  *  mips_dspr2 | mips
  *  sse2       | x86
  *  sse4_1     | x86
  *  sse4_2     | x86
  *  avx        | x86
+ *  avx2       | x86
  *  lsx        | loongarch
  *  lasx       | loongarch
  *
@@ -43,6 +45,15 @@
 #  define QT_COMPILER_USES_neon -1
 #endif
 
+// To avoid to many untestable fringe cases we so far only support 64bit LE in SVE code
+// The test for QT_COMPILER_SUPPORTS_SVE ensures the intrinsics exists
+#if defined(Q_PROCESSOR_ARM_64) && defined(__ARM_FEATURE_SVE) && defined(Q_LITTLE_ENDIAN) && defined(QT_COMPILER_SUPPORTS_SVE)
+#  include <arm_sve.h>
+#  define QT_COMPILER_USES_sve 1
+#else
+#  define QT_COMPILER_USES_sve -1
+#endif
+
 #if defined(Q_PROCESSOR_MIPS) && (defined(__MIPS_DSP__) || (defined(__mips_dsp) && defined(Q_PROCESSOR_MIPS_32)))
 #  define QT_COMPILER_USES_mips_dsp 1
 #else
@@ -140,6 +151,12 @@
 #  define QT_COMPILER_USES_avx -1
 #endif
 
+#if defined(Q_PROCESSOR_X86) && defined(__AVX2__)
+#  define QT_COMPILER_USES_avx2 1
+#else
+#  define QT_COMPILER_USES_avx2 -1
+#endif
+
 #ifndef QT_VECTORCALL
 #define QT_VECTORCALL
 #endif