41d7047de5
Rather than allowing invalid bitcasts to be lowered to wasm call instructions that won't validate, generate wrappers that contain unreachable thereby delaying the error until runtime. Differential Revision: https://reviews.llvm.org/D49517 llvm-svn: 338744
60 lines
2.0 KiB
LLVM
60 lines
2.0 KiB
LLVM
; RUN: llc < %s -asm-verbose=false | FileCheck %s
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; Test that function pointer casts that require conversions of arguments or
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; return types are converted to unreachable.
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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declare i32 @has_i64_arg(i64)
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declare i32 @has_ptr_arg(i8*)
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define void @test_invalid_rtn() {
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entry:
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call i32 bitcast (i32 (i64)* @has_i64_arg to i32 (i32)*)(i32 0)
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ret void
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}
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; CHECK-LABEL: test_invalid_rtn:
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: i32.call $push1=, .Lhas_i64_arg_bitcast_invalid@FUNCTION, $pop[[L0]]{{$}}
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; CHECK-NEXT: drop $pop1
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; CHECK-NEXT: end_function
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define void @test_invalid_arg() {
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entry:
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call i32 bitcast (i32 (i8*)* @has_ptr_arg to i32 (i8)*)(i8 2)
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call i32 bitcast (i32 (i8*)* @has_ptr_arg to i32 (i32)*)(i32 2)
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call i32 bitcast (i32 (i8*)* @has_ptr_arg to i32 (i64)*)(i64 3)
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ret void
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}
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; CHECK-LABEL: test_invalid_arg:
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 2{{$}}
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; CHECK-NEXT: i32.call $push[[L1:[0-9]+]]=, .Lhas_ptr_arg_bitcast_invalid.1@FUNCTION, $pop[[L0]]{{$}}
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; CHECK-NEXT: drop $pop[[L1]]{{$}}
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 2{{$}}
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; CHECK-NEXT: i32.call $push[[L1:[0-9]+]]=, has_ptr_arg@FUNCTION, $pop[[L0]]{{$}}
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; CHECK-NEXT: drop $pop[[L1]]{{$}}
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; CHECK-NEXT: i64.const $push[[L0:[0-9]+]]=, 3{{$}}
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; CHECK-NEXT: i32.call $push[[L1:[0-9]+]]=, .Lhas_ptr_arg_bitcast_invalid@FUNCTION, $pop[[L0]]{{$}}
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; CHECK-NEXT: drop $pop[[L1]]{{$}}
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lhas_i64_arg_bitcast_invalid:
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; CHECK-NEXT: .param i32
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; CHECK-NEXT: .result i32
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; CHECK-NEXT: unreachable
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lhas_ptr_arg_bitcast_invalid:
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; CHECK-NEXT: .param i64
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; CHECK-NEXT: .result i32
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; CHECK-NEXT: unreachable
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lhas_ptr_arg_bitcast_invalid.1:
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; CHECK-NEXT: .param i32
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; CHECK-NEXT: .result i32
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; CHECK-NEXT: unreachable
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; CHECK-NEXT: end_function
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