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This commit implements support for WebAssembly table types and respective builtins. Table tables are WebAssembly objects to store reference types. They have a large amount of semantic restrictions including, but not limited to, only being allowed to be declared at the top-level as static arrays of zero-length. Not being arguments or result of functions, not being stored ot memory, etc. This commit introduces the __attribute__((wasm_table)) to attach to arrays of WebAssembly reference types. And the following builtins to manage tables: * ref __builtin_wasm_table_get(table, idx) * void __builtin_wasm_table_set(table, idx, ref) * uint __builtin_wasm_table_size(table) * uint __builtin_wasm_table_grow(table, ref, uint) * void __builtin_wasm_table_fill(table, idx, ref, uint) * void __builtin_wasm_table_copy(table, table, uint, uint, uint) This commit also enables reference-types feature at bleeding-edge. This is joint work with Alex Bradbury (@asb). Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D139010
68 lines
3.0 KiB
C
68 lines
3.0 KiB
C
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature
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// RUN: %clang_cc1 -triple wasm32 -target-feature +reference-types -disable-O0-optnone -emit-llvm %s -o - | opt -S -passes=mem2reg | FileCheck %s
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// REQUIRES: webassembly-registered-target
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static __externref_t table[0];
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// CHECK-LABEL: define {{[^@]+}}@test_builtin_wasm_table_get
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// CHECK-SAME: (i32 noundef [[INDEX:%.*]]) #[[ATTR0:[0-9]+]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[TMP0:%.*]] = call ptr addrspace(10) @llvm.wasm.table.get.externref(ptr addrspace(1) @table, i32 [[INDEX]])
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// CHECK-NEXT: ret ptr addrspace(10) [[TMP0]]
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//
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__externref_t test_builtin_wasm_table_get(int index) {
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return __builtin_wasm_table_get(table, index);
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}
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// CHECK-LABEL: define {{[^@]+}}@test_builtin_wasm_table_set
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// CHECK-SAME: (i32 noundef [[INDEX:%.*]], ptr addrspace(10) [[REF:%.*]]) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: call void @llvm.wasm.table.set.externref(ptr addrspace(1) @table, i32 [[INDEX]], ptr addrspace(10) [[REF]])
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// CHECK-NEXT: ret void
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//
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void test_builtin_wasm_table_set(int index, __externref_t ref) {
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return __builtin_wasm_table_set(table, index, ref);
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}
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// CHECK-LABEL: define {{[^@]+}}@test_builtin_wasm_table_size
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// CHECK-SAME: () #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[TMP0:%.*]] = call i32 @llvm.wasm.table.size(ptr addrspace(1) @table)
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// CHECK-NEXT: ret i32 [[TMP0]]
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//
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int test_builtin_wasm_table_size() {
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return __builtin_wasm_table_size(table);
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}
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// CHECK-LABEL: define {{[^@]+}}@test_builtin_wasm_table_grow
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// CHECK-SAME: (ptr addrspace(10) [[REF:%.*]], i32 noundef [[NELEM:%.*]]) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[TMP0:%.*]] = call i32 @llvm.wasm.table.grow.externref(ptr addrspace(1) @table, ptr addrspace(10) [[REF]], i32 [[NELEM]])
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// CHECK-NEXT: ret i32 [[TMP0]]
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//
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int test_builtin_wasm_table_grow(__externref_t ref, int nelem) {
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return __builtin_wasm_table_grow(table, ref, nelem);
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}
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// CHECK-LABEL: define {{[^@]+}}@test_builtin_wasm_table_fill
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// CHECK-SAME: (i32 noundef [[INDEX:%.*]], ptr addrspace(10) [[REF:%.*]], i32 noundef [[NELEM:%.*]]) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: call void @llvm.wasm.table.fill.externref(ptr addrspace(1) @table, i32 [[INDEX]], ptr addrspace(10) [[REF]], i32 [[NELEM]])
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// CHECK-NEXT: ret void
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//
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void test_builtin_wasm_table_fill(int index, __externref_t ref, int nelem) {
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__builtin_wasm_table_fill(table, index, ref, nelem);
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}
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static __externref_t other_table[0];
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// CHECK-LABEL: define {{[^@]+}}@test_table_copy
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// CHECK-SAME: (i32 noundef [[DST_IDX:%.*]], i32 noundef [[SRC_IDX:%.*]], i32 noundef [[NELEM:%.*]]) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: call void @llvm.wasm.table.copy(ptr addrspace(1) @table, ptr addrspace(1) @other_table, i32 [[SRC_IDX]], i32 [[DST_IDX]], i32 [[NELEM]])
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// CHECK-NEXT: ret void
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//
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void test_table_copy(int dst_idx, int src_idx, int nelem) {
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__builtin_wasm_table_copy(table, other_table, dst_idx, src_idx, nelem);
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}
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