95ac9314df
Before, Wasm FastISel treated all indirect calls the same, causing miscompilations at O0 when trying to call a funcref (`call ptr addrspace(20)`), as it would treat the funcref as a normal `ptr` This adds a check so it falls back to ISelDAG when encountering calls outside addrspace 0 (which covers direct calls and indirect calls through normal function pointers). Related: #140933
47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s --mtriple=wasm32-unknown-unknown -fast-isel=0 -mattr=+reference-types | FileCheck %s
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; RUN: llc < %s --mtriple=wasm32-unknown-unknown -fast-isel=1 -mattr=+reference-types | FileCheck %s
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%funcref = type ptr addrspace(20) ;; addrspace 20 is nonintegral
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; CHECK: .tabletype __funcref_call_table, funcref, 1
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define void @call_funcref(%funcref %ref) {
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; CHECK-LABEL: call_funcref:
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; CHECK: .functype call_funcref (funcref) -> ()
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: table.set __funcref_call_table
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: call_indirect __funcref_call_table, () -> ()
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: ref.null_func
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; CHECK-NEXT: table.set __funcref_call_table
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; CHECK-NEXT: # fallthrough-return
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call addrspace(20) void %ref()
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ret void
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}
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define float @call_funcref_with_args(%funcref %ref) {
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; CHECK-LABEL: call_funcref_with_args:
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; CHECK: .functype call_funcref_with_args (funcref) -> (f32)
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; CHECK-NEXT: .local f32
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: table.set __funcref_call_table
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; CHECK-NEXT: f64.const 0x1p0
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; CHECK-NEXT: i32.const 2
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: call_indirect __funcref_call_table, (f64, i32) -> (f32)
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; CHECK-NEXT: local.set 1
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; CHECK-NEXT: i32.const 0
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; CHECK-NEXT: ref.null_func
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; CHECK-NEXT: table.set __funcref_call_table
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; CHECK-NEXT: local.get 1
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; CHECK-NEXT: # fallthrough-return
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%ret = call addrspace(20) float %ref(double 1.0, i32 2)
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ret float %ret
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}
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