mirror of
https://github.com/RPCS3/llvm.git
synced 2026-01-31 01:25:19 +01:00
6aa7ab2443
Summary: Add WebAssemblyLateEHPrepare pass that does several small jobs for exception handling. This runs before CFGSort, and is different from WasmEHPrepare pass that runs before ISel, even though the names are similar. Reviewers: dschuff, majnemer Subscribers: sbc100, jgravelle-google, sunfish, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D46803 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335438 91177308-0d34-0410-b5e6-96231b3b80d8
159 lines
6.1 KiB
LLVM
159 lines
6.1 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -exception-model=wasm | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
|
target triple = "wasm32-unknown-unknown"
|
|
|
|
%struct.Cleanup = type { i8 }
|
|
|
|
@_ZTIi = external constant i8*
|
|
|
|
declare void @llvm.wasm.throw(i32, i8*)
|
|
|
|
; CHECK-LABEL: test_throw:
|
|
; CHECK-NEXT: i32.const $push0=, 0
|
|
; CHECK-NEXT: throw 0, $pop0
|
|
define void @test_throw() {
|
|
call void @llvm.wasm.throw(i32 0, i8* null)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: test_catch_rethrow:
|
|
; CHECK: call foo@FUNCTION
|
|
; CHECK: i32.catch $push{{.+}}=, 0
|
|
; CHECK-DAG: i32.store __wasm_lpad_context
|
|
; CHECK-DAG: i32.store __wasm_lpad_context+4
|
|
; CHECK: i32.call $push{{.+}}=, _Unwind_CallPersonality@FUNCTION
|
|
; CHECK: i32.call $push{{.+}}=, __cxa_begin_catch@FUNCTION
|
|
; CHECK: call __cxa_end_catch@FUNCTION
|
|
; CHECK: call __cxa_rethrow@FUNCTION
|
|
; CHECK-NEXT: rethrow
|
|
define void @test_catch_rethrow() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
|
|
entry:
|
|
invoke void @foo()
|
|
to label %try.cont unwind label %catch.dispatch
|
|
|
|
catch.dispatch: ; preds = %entry
|
|
%0 = catchswitch within none [label %catch.start] unwind to caller
|
|
|
|
catch.start: ; preds = %catch.dispatch
|
|
%1 = catchpad within %0 [i8* bitcast (i8** @_ZTIi to i8*)]
|
|
%2 = call i8* @llvm.wasm.get.exception(token %1)
|
|
%3 = call i32 @llvm.wasm.get.ehselector(token %1)
|
|
%4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
|
|
%matches = icmp eq i32 %3, %4
|
|
br i1 %matches, label %catch, label %rethrow
|
|
|
|
catch: ; preds = %catch.start
|
|
%5 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ]
|
|
call void @__cxa_end_catch() [ "funclet"(token %1) ]
|
|
catchret from %1 to label %try.cont
|
|
|
|
rethrow: ; preds = %catch.start
|
|
call void @__cxa_rethrow() [ "funclet"(token %1) ]
|
|
unreachable
|
|
|
|
try.cont: ; preds = %entry, %catch
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: test_cleanup:
|
|
; CHECK: call foo@FUNCTION
|
|
; CHECK: catch_all
|
|
; CHECK: i32.call $push20=, _ZN7CleanupD1Ev@FUNCTION
|
|
; CHECK: rethrow
|
|
define void @test_cleanup() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
|
|
entry:
|
|
%c = alloca %struct.Cleanup, align 1
|
|
invoke void @foo()
|
|
to label %invoke.cont unwind label %ehcleanup
|
|
|
|
invoke.cont: ; preds = %entry
|
|
%call = call %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c)
|
|
ret void
|
|
|
|
ehcleanup: ; preds = %entry
|
|
%0 = cleanuppad within none []
|
|
%call1 = call %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c) [ "funclet"(token %0) ]
|
|
cleanupret from %0 unwind to caller
|
|
}
|
|
|
|
; - Tests multple terminate pads are merged into one
|
|
; - Tests a catch_all terminate pad is created after a catch terminate pad
|
|
|
|
; CHECK-LABEL: test_terminatepad
|
|
; CHECK: i32.catch
|
|
; CHECK: call __clang_call_terminate@FUNCTION
|
|
; CHECK: unreachable
|
|
; CHECK: catch_all
|
|
; CHECK: call _ZSt9terminatev@FUNCTION
|
|
; CHECK-NOT: call __clang_call_terminate@FUNCTION
|
|
define hidden i32 @test_terminatepad() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
|
|
entry:
|
|
%c = alloca %struct.Cleanup, align 1
|
|
%c1 = alloca %struct.Cleanup, align 1
|
|
invoke void @foo()
|
|
to label %invoke.cont unwind label %ehcleanup
|
|
|
|
invoke.cont: ; preds = %entry
|
|
%call = invoke %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c1)
|
|
to label %try.cont unwind label %catch.dispatch
|
|
|
|
ehcleanup: ; preds = %entry
|
|
%0 = cleanuppad within none []
|
|
%call4 = invoke %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c1) [ "funclet"(token %0) ]
|
|
to label %invoke.cont3 unwind label %terminate
|
|
|
|
invoke.cont3: ; preds = %ehcleanup
|
|
cleanupret from %0 unwind label %catch.dispatch
|
|
|
|
catch.dispatch: ; preds = %invoke.cont3, %invoke.cont
|
|
%1 = catchswitch within none [label %catch.start] unwind label %ehcleanup7
|
|
|
|
catch.start: ; preds = %catch.dispatch
|
|
%2 = catchpad within %1 [i8* null]
|
|
%3 = call i8* @llvm.wasm.get.exception(token %2)
|
|
%4 = call i32 @llvm.wasm.get.ehselector(token %2)
|
|
%5 = call i8* @__cxa_begin_catch(i8* %3) [ "funclet"(token %2) ]
|
|
invoke void @__cxa_end_catch() [ "funclet"(token %2) ]
|
|
to label %invoke.cont5 unwind label %ehcleanup7
|
|
|
|
invoke.cont5: ; preds = %catch.start
|
|
catchret from %2 to label %try.cont
|
|
|
|
try.cont: ; preds = %invoke.cont5, %invoke.cont
|
|
%call6 = call %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c)
|
|
ret i32 0
|
|
|
|
ehcleanup7: ; preds = %catch.start, %catch.dispatch
|
|
%6 = cleanuppad within none []
|
|
%call9 = invoke %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c) [ "funclet"(token %6) ]
|
|
to label %invoke.cont8 unwind label %terminate10
|
|
|
|
invoke.cont8: ; preds = %ehcleanup7
|
|
cleanupret from %6 unwind to caller
|
|
|
|
terminate: ; preds = %ehcleanup
|
|
%7 = cleanuppad within %0 []
|
|
%8 = call i8* @llvm.wasm.get.exception(token %7)
|
|
call void @__clang_call_terminate(i8* %8) [ "funclet"(token %7) ]
|
|
unreachable
|
|
|
|
terminate10: ; preds = %ehcleanup7
|
|
%9 = cleanuppad within %6 []
|
|
%10 = call i8* @llvm.wasm.get.exception(token %9)
|
|
call void @__clang_call_terminate(i8* %10) [ "funclet"(token %9) ]
|
|
unreachable
|
|
}
|
|
|
|
declare void @foo()
|
|
declare i32 @__gxx_wasm_personality_v0(...)
|
|
declare i8* @llvm.wasm.get.exception(token)
|
|
declare i32 @llvm.wasm.get.ehselector(token)
|
|
declare i32 @llvm.eh.typeid.for(i8*)
|
|
declare i8* @__cxa_begin_catch(i8*)
|
|
declare void @__cxa_end_catch()
|
|
declare void @__cxa_rethrow()
|
|
declare void @__clang_call_terminate(i8*)
|
|
declare void @_ZSt9terminatev()
|
|
declare %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* returned)
|