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toywasm: disable tail call and explain why

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YAMAMOTO Takashi 2023-06-16 22:49:56 +09:00 committed by Petro Karashchenko
parent b8856479ef
commit fcda92ebc7
1 changed files with 8 additions and 0 deletions
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8
interpreters/toywasm/regen.sh
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@ -18,8 +18,16 @@ git -C ${DIR} checkout FETCH_HEAD
# Note: for this build, TOYWASM_USE_SHORT_ENUMS is only used for
# the "toywasm --version" output.
# Note: Disable TOYWASM_USE_TAILCALL because it isn't safe for some
# targets and/or compilers. For example, xtensa windowed ABI doesn't
# allow tail call optimization. (At least it isn't straightforward
# unless frame sizes of the caller and the callee happens to match.)
# REVISIT: This should probably be a Kconfig knob. For now, disable
# it globally.
cmake -B ${BUILDDIR} \
-DTOYWASM_USE_SHORT_ENUMS=OFF \
-DTOYWASM_USE_TAILCALL=OFF \
-DTOYWASM_ENABLE_WASM_EXTENDED_CONST=ON \
-DTOYWASM_ENABLE_WASM_MULTI_MEMORY=ON \
-DTOYWASM_ENABLE_WASM_TAILCALL=ON \