a96d828510
This patch implements the intrinsic for ref.null. In the process of implementing int_wasm_ref_null_func() and int_wasm_ref_null_extern() intrinsics, it removes the redundant HeapType. This also causes the textual assembler syntax for ref.null to change. Instead of receiving an argument: `func` or `extern`, the instruction mnemonic is either ref.null_func or ref.null_extern, without the need for a further operand. Reviewed By: tlively Differential Revision: https://reviews.llvm.org/D114979
27 lines
917 B
LLVM
27 lines
917 B
LLVM
; RUN: llc --mtriple=wasm32-unknown-unknown -asm-verbose=false -mattr=+reference-types < %s | FileCheck %s
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%extern = type opaque
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%externref = type %extern addrspace(10)* ;; addrspace 10 is nonintegral
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%funcref = type i8 addrspace(20)* ;; addrspace 20 is nonintegral
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declare %externref @llvm.wasm.ref.null.extern() nounwind
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declare %funcref @llvm.wasm.ref.null.func() nounwind
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define %externref @get_null_extern() {
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; CHECK-LABEL: get_null_extern:
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; CHECK-NEXT: .functype get_null_extern () -> (externref)
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; CHECK-NEXT: ref.null_extern
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; CHECK-NEXT: end_function
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%null = call %externref @llvm.wasm.ref.null.extern()
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ret %externref %null
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}
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define %funcref @get_null_func() {
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; CHECK-LABEL: get_null_func:
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; CHECK-NEXT: .functype get_null_func () -> (funcref)
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; CHECK-NEXT: ref.null_func
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; CHECK-NEXT: end_function
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%null = call %funcref @llvm.wasm.ref.null.func()
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ret %funcref %null
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}
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