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# This script generates a C++ function that provides the CPU | ||
# code for use with kernel generation. | ||
# | ||
# Copyright © 2024 Apple Inc. | ||
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$OUTPUT_FILE = $args[0] | ||
$CL = $args[1] | ||
$SRCDIR = $args[2] | ||
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# Get command result as array. | ||
$CONTENT = & $CL /std:c++17 /EP "/I$SRCDIR" /Tp "$SRCDIR/mlx/backend/common/compiled_preamble.h" | ||
# Remove empty lines. | ||
# Otherwise there will be too much empty lines making the result unreadable. | ||
$CONTENT = $CONTENT | Where-Object { $_.Trim() -ne '' } | ||
# Concatenate to string. | ||
$CONTENT = $CONTENT -join '`n' | ||
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# Append extra content. | ||
$CONTENT = @" | ||
$($CONTENT) | ||
using namespace mlx::core; | ||
using namespace mlx::core::detail; | ||
"@ | ||
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# Convert each char to ASCII code. | ||
# Unlike the unix script that outputs string literal directly, the output from | ||
# MSVC is way too large to be embedded as string and compilation will fail, so | ||
# we store it as static array instead. | ||
$CHARCODES = ([System.Text.Encoding]::ASCII.GetBytes($CONTENT) -join ', ') + ', 0' | ||
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$OUTPUT = @" | ||
const char* get_kernel_preamble() { | ||
static char preamble[] = { $CHARCODES }; | ||
return preamble; | ||
} | ||
"@ | ||
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Set-Content -Path $OUTPUT_FILE -Value $OUTPUT |