builtins.h
4.32 KB
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Short-cut generation of simple built-in functions · 4cfe7a6c
This patch short-circuits the builtins.c expansion code for a particular gimple call if: - the function has an associated internal function - the target implements that internal function - the call has no side effects This allows a later patch to remove the builtins.c code, once calls with side effects have been handled. Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi. gcc/ * builtins.h (called_as_built_in): Declare. * builtins.c (called_as_built_in): Make external. * internal-fn.h (expand_internal_call): Define a variant that specifies the internal function explicitly. * internal-fn.c (expand_load_lanes_optab_fn) (expand_store_lanes_optab_fn, expand_ANNOTATE, expand_GOMP_SIMD_LANE) (expand_GOMP_SIMD_VF, expand_GOMP_SIMD_LAST_LANE) (expand_GOMP_SIMD_ORDERED_START, expand_GOMP_SIMD_ORDERED_END) (expand_UBSAN_NULL, expand_UBSAN_BOUNDS, expand_UBSAN_VPTR) (expand_UBSAN_OBJECT_SIZE, expand_ASAN_CHECK, expand_TSAN_FUNC_EXIT) (expand_UBSAN_CHECK_ADD, expand_UBSAN_CHECK_SUB) (expand_UBSAN_CHECK_MUL, expand_ADD_OVERFLOW, expand_SUB_OVERFLOW) (expand_MUL_OVERFLOW, expand_LOOP_VECTORIZED) (expand_mask_load_optab_fn, expand_mask_store_optab_fn) (expand_ABNORMAL_DISPATCHER, expand_BUILTIN_EXPECT, expand_VA_ARG) (expand_UNIQUE, expand_GOACC_DIM_SIZE, expand_GOACC_DIM_POS) (expand_GOACC_LOOP, expand_GOACC_REDUCTION, expand_direct_optab_fn) (expand_unary_optab_fn, expand_binary_optab_fn): Add an internal_fn argument. (internal_fn_expanders): Update prototype. (expand_internal_call): Define a variant that specifies the internal function explicitly. Use it to implement the previous interface. * cfgexpand.c (expand_call_stmt): Try to expand calls to built-in functions as calls to internal functions. From-SVN: r230487
Richard Sandiford committed