204 lines
7.2 KiB
LLVM
204 lines
7.2 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -wasm-disable-explicit-locals -wasm-keep-registers -enable-emscripten-cxx-exceptions -wasm-temporary-workarounds=false | FileCheck %s
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; Test that function pointer casts are replaced with wrappers.
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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 void @has_i32_arg(i32)
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declare void @has_struct_arg({i32})
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declare i32 @has_i32_ret()
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declare void @vararg(...)
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declare void @plain(i32)
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declare void @foo0()
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declare void @foo1()
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declare void @foo2()
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declare void @foo3()
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; CHECK-LABEL: test:
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; CHECK-NEXT: call .Lhas_i32_arg_bitcast.2@FUNCTION{{$}}
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; CHECK-NEXT: call .Lhas_i32_arg_bitcast.2@FUNCTION{{$}}
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; CHECK-NEXT: call .Lhas_i32_ret_bitcast@FUNCTION{{$}}
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; CHECK-NEXT: i32.call $drop=, has_i32_ret@FUNCTION
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 0
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; CHECK-NEXT: call .Lfoo0_bitcast@FUNCTION, $pop[[L0]]{{$}}
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; CHECK-NEXT: i32.const $push[[L1:[0-9]+]]=, 0
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; CHECK-NEXT: call .Lfoo0_bitcast@FUNCTION, $pop[[L1]]{{$}}
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; CHECK-NEXT: i32.const $push[[L2:[0-9]+]]=, 0
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; CHECK-NEXT: call .Lfoo0_bitcast@FUNCTION, $pop[[L2]]{{$}}
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; CHECK-NEXT: call foo0@FUNCTION
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; CHECK-NEXT: i32.call $drop=, .Lfoo1_bitcast@FUNCTION{{$}}
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; CHECK-NEXT: call foo2@FUNCTION{{$}}
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; CHECK-NEXT: call foo1@FUNCTION{{$}}
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; CHECK-NEXT: call foo3@FUNCTION{{$}}
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; CHECK-NEXT: end_function
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define void @test() {
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entry:
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call void bitcast (void (i32)* @has_i32_arg to void ()*)()
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call void bitcast (void (i32)* @has_i32_arg to void ()*)()
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call void bitcast (i32 ()* @has_i32_ret to void ()*)()
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call i32 bitcast (i32 ()* @has_i32_ret to i32 ()*)()
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call void bitcast (void ()* @foo0 to void (i32)*)(i32 0)
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%p = bitcast void ()* @foo0 to void (i32)*
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call void %p(i32 0)
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%q = bitcast void ()* @foo0 to void (i32)*
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call void %q(i32 0)
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%r = bitcast void (i32)* %q to void ()*
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call void %r()
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%t = call i32 bitcast (void ()* @foo1 to i32 ()*)()
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call void bitcast (void ()* @foo2 to void ()*)()
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call void @foo1()
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call void @foo3()
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ret void
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}
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; CHECK-LABEL: test_structs:
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; CHECK: call .Lhas_i32_arg_bitcast.1@FUNCTION, $pop{{[0-9]+}}, $pop{{[0-9]+$}}
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; CHECK: call .Lhas_i32_arg_bitcast@FUNCTION, $0, $pop2
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; CHECK: call .Lhas_struct_arg_bitcast@FUNCTION{{$}}
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define void @test_structs() {
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entry:
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call void bitcast (void (i32)* @has_i32_arg to void (i32, {i32})*)(i32 5, {i32} {i32 6})
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call {i32, i64} bitcast (void (i32)* @has_i32_arg to {i32, i64} (i32)*)(i32 7)
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call void bitcast (void ({i32})* @has_struct_arg to void ()*)()
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ret void
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}
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; CHECK-LABEL: test_structs_unhandled:
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; CHECK: call has_struct_arg@FUNCTION, $pop{{[0-9]+$}}
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; CHECK: call has_struct_arg@FUNCTION, $pop{{[0-9]+$}}
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; CHECK: call has_i32_ret@FUNCTION, $pop{{[0-9]+$}}
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define void @test_structs_unhandled() {
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entry:
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call void @has_struct_arg({i32} {i32 3})
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call void bitcast (void ({i32})* @has_struct_arg to void ({i64})*)({i64} {i64 4})
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call {i32, i32} bitcast (i32 ()* @has_i32_ret to {i32, i32} ()*)()
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ret void
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}
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; CHECK-LABEL: test_varargs:
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; CHECK: set_global
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; CHECK: i32.const $push[[L3:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: call .Lvararg_bitcast@FUNCTION, $pop[[L3]]{{$}}
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; CHECK-NEXT: i32.const $push[[L4:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: i32.store 0($[[L5:[0-9]+]]), $pop[[L4]]{{$}}
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; CHECK-NEXT: call .Lplain_bitcast@FUNCTION, $[[L5]]{{$}}
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define void @test_varargs() {
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call void bitcast (void (...)* @vararg to void (i32)*)(i32 0)
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call void (...) bitcast (void (i32)* @plain to void (...)*)(i32 0)
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ret void
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}
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; Don't use wrappers when the value is stored in memory
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@global_func = hidden local_unnamed_addr global void ()* null
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; CHECK-LABEL: test_store:
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: i32.const $push[[L1:[0-9]+]]=, has_i32_ret@FUNCTION{{$}}
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; CHECK-NEXT: i32.store global_func($pop[[L0]]), $pop[[L1]]{{$}}
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define void @test_store() {
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%1 = bitcast i32 ()* @has_i32_ret to void ()*
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store void ()* %1, void ()** @global_func
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ret void
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}
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; CHECK-LABEL: test_load:
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; CHECK-NEXT: result i32{{$}}
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: i32.load $push[[L1:[0-9]+]]=, global_func($pop[[L0]]){{$}}
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; CHECK-NEXT: i32.call_indirect $push{{[0-9]+}}=, $pop[[L1]]{{$}}
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define i32 @test_load() {
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%1 = load i32 ()*, i32 ()** bitcast (void ()** @global_func to i32 ()**)
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%2 = call i32 %1()
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ret i32 %2
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}
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; Don't use wrappers when the value is passed to a function call
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declare void @call_func(i32 ()*)
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; CHECK-LABEL: test_argument:
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, has_i32_ret@FUNCTION{{$}}
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; CHECK-NEXT: call call_func@FUNCTION, $pop[[L0]]{{$}}
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; CHECK-NEXT: i32.const $push[[L1:[0-9]+]]=, has_i32_arg@FUNCTION{{$}}
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; CHECK-NEXT: call call_func@FUNCTION, $pop[[L1]]{{$}}
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define void @test_argument() {
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call void @call_func(i32 ()* @has_i32_ret)
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call void @call_func(i32 ()* bitcast (void (i32)* @has_i32_arg to i32 ()*))
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ret void
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}
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; Invokes should be treated like calls
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; CHECK-LABEL: test_invoke:
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; CHECK: i32.const $push[[L1:[0-9]+]]=, call_func@FUNCTION{{$}}
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; CHECK-NEXT: i32.const $push[[L0:[0-9]+]]=, has_i32_ret@FUNCTION{{$}}
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; CHECK-NEXT: call "__invoke_void_i32()*"@FUNCTION, $pop[[L1]], $pop[[L0]]{{$}}
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; CHECK: i32.const $push[[L3:[0-9]+]]=, call_func@FUNCTION{{$}}
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; CHECK-NEXT: i32.const $push[[L2:[0-9]+]]=, has_i32_arg@FUNCTION{{$}}
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; CHECK-NEXT: call "__invoke_void_i32()*"@FUNCTION, $pop[[L3]], $pop[[L2]]{{$}}
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; CHECK: i32.const $push[[L4:[0-9]+]]=, .Lhas_i32_arg_bitcast.2@FUNCTION{{$}}
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; CHECK-NEXT: call __invoke_void@FUNCTION, $pop[[L4]]{{$}}
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declare i32 @personality(...)
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define void @test_invoke() personality i32 (...)* @personality {
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entry:
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invoke void @call_func(i32 ()* @has_i32_ret)
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to label %cont unwind label %lpad
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cont:
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invoke void @call_func(i32 ()* bitcast (void (i32)* @has_i32_arg to i32 ()*))
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to label %cont2 unwind label %lpad
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cont2:
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invoke void bitcast (void (i32)* @has_i32_arg to void ()*)()
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to label %end unwind label %lpad
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lpad:
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%0 = landingpad { i8*, i32 }
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catch i8* null
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br label %end
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end:
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ret void
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}
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; CHECK-LABEL: .Lhas_i32_arg_bitcast:
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; CHECK-NEXT: .param i32, i32
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; CHECK-NEXT: call has_i32_arg@FUNCTION, $1{{$}}
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lhas_i32_arg_bitcast.1:
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; CHECK-NEXT: .param i32, i32
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; CHECK-NEXT: call has_i32_arg@FUNCTION, $0{{$}}
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lhas_i32_arg_bitcast.2:
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; CHECK-NEXT: call has_i32_arg@FUNCTION, $0{{$}}
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lhas_i32_ret_bitcast:
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; CHECK-NEXT: call $drop=, has_i32_ret@FUNCTION{{$}}
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lvararg_bitcast:
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; CHECK: call vararg@FUNCTION, $1{{$}}
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; CHECK: end_function
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; CHECK-LABEL: .Lplain_bitcast:
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; CHECK: call plain@FUNCTION, $1{{$}}
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; CHECK: end_function
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; CHECK-LABEL: .Lfoo0_bitcast:
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; CHECK-NEXT: .param i32
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; CHECK-NEXT: call foo0@FUNCTION{{$}}
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; CHECK-NEXT: end_function
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; CHECK-LABEL: .Lfoo1_bitcast:
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; CHECK-NEXT: .result i32
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; CHECK-NEXT: call foo1@FUNCTION{{$}}
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; CHECK-NEXT: copy_local $push0=, $0
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; CHECK-NEXT: end_function
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