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Make ARM64EC build available with NEON intrinsics #1897

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Merged
jrouwe merged 2 commits into from
Jan 29, 2026
Merged

Make ARM64EC build available with NEON intrinsics #1897

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e1b092a
1. A batch file to make ARM64EC project
vinod-sv Jan 29, 2026
8c63cbe
Code fixes
jrouwe Jan 29, 2026
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1 change: 1 addition & 0 deletions Build/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -297,6 +297,7 @@ function(SET_INTERPROCEDURAL_OPTIMIZATION)
# On ARM, whole program optimization triggers an internal compiler error during code gen, so we don't turn it on
# When compiling as a shared lib with MinGW, turning on LTO causes errors of the form 'ld.exe: cannot export symbol X wrong type (4 vs 3)'
if (INTERPROCEDURAL_OPTIMIZATION
AND NOT ("${CMAKE_VS_PLATFORM_NAME}" STREQUAL "ARM64EC")
AND NOT ("${CMAKE_VS_PLATFORM_NAME}" STREQUAL "ARM64")
AND NOT ("${CMAKE_VS_PLATFORM_NAME}" STREQUAL "ARM")
AND (NOT CROSS_COMPILE_ARM OR ("${CROSS_COMPILE_ARM_TARGET}" STREQUAL "aarch64-linux-gnu"))
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3 changes: 3 additions & 0 deletions Build/cmake_vs2022_cl_arm_ec.bat
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@@ -0,0 +1,3 @@
@echo off
cmake -S . -B VS2022_CL_ARM_EC -G "Visual Studio 17 2022" -A ARM64EC %*
echo Open VS2022_CL_ARM_EC\JoltPhysics.sln to build the project.
28 changes: 14 additions & 14 deletions Jolt/Core/Core.h
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Expand Up @@ -117,7 +117,20 @@
#endif

// Detect CPU architecture
#if defined(__x86_64__) || defined(_M_X64) || defined(__i386__) || defined(_M_IX86)
#if defined(__aarch64__) || defined(_M_ARM64) || defined(__arm__) || defined(_M_ARM) || defined(_M_ARM64EC)
// ARM CPU architecture
#define JPH_CPU_ARM
#if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC)
#define JPH_CPU_ARCH_BITS 64
#define JPH_USE_NEON
#define JPH_VECTOR_ALIGNMENT 16
#define JPH_DVECTOR_ALIGNMENT 32
#else
#define JPH_CPU_ARCH_BITS 32
#define JPH_VECTOR_ALIGNMENT 8 // 32-bit ARM does not support aligning on the stack on 16 byte boundaries
#define JPH_DVECTOR_ALIGNMENT 8
#endif
#elif defined(__x86_64__) || defined(_M_X64) || defined(__i386__) || defined(_M_IX86)
// X86 CPU architecture
#define JPH_CPU_X86
#if defined(__x86_64__) || defined(_M_X64)
Expand Down Expand Up @@ -167,19 +180,6 @@
#error Undefined compiler
#endif
#endif
#elif defined(__aarch64__) || defined(_M_ARM64) || defined(__arm__) || defined(_M_ARM)
// ARM CPU architecture
#define JPH_CPU_ARM
#if defined(__aarch64__) || defined(_M_ARM64)
#define JPH_CPU_ARCH_BITS 64
#define JPH_USE_NEON
#define JPH_VECTOR_ALIGNMENT 16
#define JPH_DVECTOR_ALIGNMENT 32
#else
#define JPH_CPU_ARCH_BITS 32
#define JPH_VECTOR_ALIGNMENT 8 // 32-bit ARM does not support aligning on the stack on 16 byte boundaries
#define JPH_DVECTOR_ALIGNMENT 8
#endif
#elif defined(__riscv)
// RISC-V CPU architecture
#define JPH_CPU_RISCV
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