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1bd1a44070
Initial table.get/set implementation would match and lower combinations of GEP+load/store to table.get/set instructions. However, this is error prone due to potential combinations of GEP+load/store we don't implement, and load/store optimizations. By changing the code to using intrinsics, we avoid both issues and simplify the code. New builtins implemented: * @llvm.wasm.table.get.externref * @llvm.wasm.table.get.funcref * @llvm.wasm.table.set.externref * @llvm.wasm.table.set.funcref Reviewed By: asb, tlively Differential Revision: https://reviews.llvm.org/D134436
74 lines
2.7 KiB
LLVM
74 lines
2.7 KiB
LLVM
; RUN: llc < %s --mtriple=wasm32-unknown-unknown -asm-verbose=false -mattr=+reference-types | FileCheck %s
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%funcref = type ptr addrspace(20) ;; addrspace 20 is nonintegral
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@funcref_table = local_unnamed_addr addrspace(1) global [0 x %funcref] undef
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declare %funcref @llvm.wasm.table.get.funcref(ptr addrspace(1), i32) nounwind
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define %funcref @get_funcref_from_table(i32 %i) {
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; CHECK-LABEL: get_funcref_from_table:
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; CHECK-NEXT: .functype get_funcref_from_table (i32) -> (funcref)
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: table.get funcref_table
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; CHECK-NEXT: end_function
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%ref = call %funcref @llvm.wasm.table.get.funcref(ptr addrspace(1) @funcref_table, i32 %i)
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ret %funcref %ref
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}
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define %funcref @get_funcref_from_table_const() {
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; CHECK-LABEL: get_funcref_from_table_const:
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; CHECK-NEXT: .functype get_funcref_from_table_const () -> (funcref)
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: table.get funcref_table
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; CHECK-NEXT: end_function
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%ref = call %funcref @llvm.wasm.table.get.funcref(ptr addrspace(1) @funcref_table, i32 0)
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ret %funcref %ref
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}
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define %funcref @get_funcref_from_table_with_offset(i32 %i) {
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; CHECK-LABEL: get_funcref_from_table_with_offset:
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; CHECK-NEXT: .functype get_funcref_from_table_with_offset (i32) -> (funcref)
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: i32.const 2
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: table.get funcref_table
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; CHECK-NEXT: end_function
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%off = add nsw i32 %i, 2
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%ref = call %funcref @llvm.wasm.table.get.funcref(ptr addrspace(1) @funcref_table, i32 %off)
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ret %funcref %ref
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}
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define %funcref @get_funcref_from_table_with_var_offset(i32 %i, i32 %j) {
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; CHECK-LABEL: get_funcref_from_table_with_var_offset:
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; CHECK-NEXT: .functype get_funcref_from_table_with_var_offset (i32, i32) -> (funcref)
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: table.get funcref_table
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; CHECK-NEXT: end_function
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%off = add nsw i32 %i, %j
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%ref = call %funcref @llvm.wasm.table.get.funcref(ptr addrspace(1) @funcref_table, i32 %off)
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ret %funcref %ref
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}
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declare i32 @get_offset()
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define %funcref @get_funcref_from_table_with_var_offset2(i32 %i) {
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; CHECK-LABEL: get_funcref_from_table_with_var_offset2:
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; CHECK-NEXT: .functype get_funcref_from_table_with_var_offset2 (i32) -> (funcref)
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: call get_offset
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: table.get funcref_table
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; CHECK-NEXT: end_function
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%j = call i32 @get_offset()
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%off = add nsw i32 %i, %j
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%ref = call %funcref @llvm.wasm.table.get.funcref(ptr addrspace(1) @funcref_table, i32 %off)
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ret %funcref %ref
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}
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; CHECK: .tabletype funcref_table, funcref
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; CHECK-LABEL: funcref_table:
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