forked from OSchip/llvm-project
144 lines
5.6 KiB
LLVM
144 lines
5.6 KiB
LLVM
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; RUN: opt < %s -wasm-lower-em-exceptions -S | FileCheck %s
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@_ZTIi = external constant i8*
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@_ZTIc = external constant i8*
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; CHECK: @[[__THREW__:__THREW__.*]] = global i1 false
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; CHECK: @[[THREWVALUE:threwValue.*]] = global i32 0
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; CHECK: @[[TEMPRET0:tempRet0.*]] = global i32 0
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; Test invoke instruction with clauses (try-catch block)
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define void @clause() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @clause(
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entry:
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invoke void @foo(i32 3)
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to label %invoke.cont unwind label %lpad
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; CHECK: entry:
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; CHECK-NEXT: store i1 false, i1* @[[__THREW__]]
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; CHECK-NEXT: call void @__invoke_void_i32(void (i32)* @foo, i32 3)
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; CHECK-NEXT: %[[__THREW__VAL:.*]] = load i1, i1* @[[__THREW__]]
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; CHECK-NEXT: store i1 false, i1* @[[__THREW__]]
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; CHECK-NEXT: br i1 %[[__THREW__VAL]], label %lpad, label %invoke.cont
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invoke.cont: ; preds = %entry
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br label %try.cont
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lpad: ; preds = %entry
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%0 = landingpad { i8*, i32 }
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catch i8* bitcast (i8** @_ZTIi to i8*)
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catch i8* null
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = extractvalue { i8*, i32 } %0, 1
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br label %catch.dispatch
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; CHECK: lpad:
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; CHECK-NEXT: %[[FMC:.*]] = call i8* @___cxa_find_matching_catch_4(i8* bitcast (i8** @_ZTIi to i8*), i8* null)
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; CHECK-NEXT: %[[IVI1:.*]] = insertvalue { i8*, i32 } undef, i8* %[[FMC]], 0
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; CHECK-NEXT: %[[TEMPRET0_VAL:.*]] = load i32, i32* @[[TEMPRET0]]
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; CHECK-NEXT: %[[IVI2:.*]] = insertvalue { i8*, i32 } %[[IVI1]], i32 %[[TEMPRET0_VAL]], 1
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; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 0
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; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 1
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catch.dispatch: ; preds = %lpad
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%3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
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%matches = icmp eq i32 %2, %3
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br i1 %matches, label %catch1, label %catch
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catch1: ; preds = %catch.dispatch
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%4 = call i8* @__cxa_begin_catch(i8* %1)
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%5 = bitcast i8* %4 to i32*
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%6 = load i32, i32* %5, align 4
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call void @__cxa_end_catch()
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br label %try.cont
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try.cont: ; preds = %catch, %catch1, %invoke.cont
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ret void
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catch: ; preds = %catch.dispatch
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%7 = call i8* @__cxa_begin_catch(i8* %1)
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call void @__cxa_end_catch()
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br label %try.cont
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}
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; Test invoke instruction with filters (functions with throw(...) declaration)
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define void @filter() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @filter(
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entry:
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invoke void @foo(i32 3)
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to label %invoke.cont unwind label %lpad
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; CHECK: entry:
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; CHECK-NEXT: store i1 false, i1* @[[__THREW__]]
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; CHECK-NEXT: call void @__invoke_void_i32(void (i32)* @foo, i32 3)
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; CHECK-NEXT: %[[__THREW__VAL:.*]] = load i1, i1* @[[__THREW__]]
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; CHECK-NEXT: store i1 false, i1* @[[__THREW__]]
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; CHECK-NEXT: br i1 %[[__THREW__VAL]], label %lpad, label %invoke.cont
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invoke.cont: ; preds = %entry
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ret void
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lpad: ; preds = %entry
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%0 = landingpad { i8*, i32 }
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filter [2 x i8*] [i8* bitcast (i8** @_ZTIi to i8*), i8* bitcast (i8** @_ZTIc to i8*)]
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = extractvalue { i8*, i32 } %0, 1
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br label %filter.dispatch
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; CHECK: lpad:
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; CHECK-NEXT: %[[FMC:.*]] = call i8* @___cxa_find_matching_catch_4(i8* bitcast (i8** @_ZTIi to i8*), i8* bitcast (i8** @_ZTIc to i8*))
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; CHECK-NEXT: %[[IVI1:.*]] = insertvalue { i8*, i32 } undef, i8* %[[FMC]], 0
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; CHECK-NEXT: %[[TEMPRET0_VAL:.*]] = load i32, i32* @[[TEMPRET0]]
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; CHECK-NEXT: %[[IVI2:.*]] = insertvalue { i8*, i32 } %[[IVI1]], i32 %[[TEMPRET0_VAL]], 1
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; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 0
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; CHECK-NEXT: extractvalue { i8*, i32 } %[[IVI2]], 1
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filter.dispatch: ; preds = %lpad
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%ehspec.fails = icmp slt i32 %2, 0
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br i1 %ehspec.fails, label %ehspec.unexpected, label %eh.resume
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ehspec.unexpected: ; preds = %filter.dispatch
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call void @__cxa_call_unexpected(i8* %1) #4
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unreachable
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eh.resume: ; preds = %filter.dispatch
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %1, 0
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%lpad.val3 = insertvalue { i8*, i32 } %lpad.val, i32 %2, 1
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resume { i8*, i32 } %lpad.val3
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; CHECK: eh.resume:
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; CHECK-NEXT: insertvalue
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; CHECK-NEXT: %[[LPAD_VAL:.*]] = insertvalue
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; CHECK-NEXT: %[[LOW:.*]] = extractvalue { i8*, i32 } %[[LPAD_VAL]], 0
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; CHECK-NEXT: call void @___resumeException(i8* %[[LOW]])
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; CHECK-NEXT: unreachable
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}
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declare void @foo(i32)
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declare i32 @__gxx_personality_v0(...)
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declare i32 @llvm.eh.typeid.for(i8*)
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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declare void @__cxa_call_unexpected(i8*)
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; JS glue functions and invoke wrappers registration
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; CHECK: declare void @___resumeException(i8*)
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; CHECK: declare void @__invoke_void_i32(void (i32)*, i32)
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; CHECK: declare i8* @___cxa_find_matching_catch_4(i8*, i8*)
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; setThrew function creation
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; CHECK-LABEL: define void @setThrew(i1 %threw, i32 %value) {
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; CHECK: entry:
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; CHECK-NEXT: %__THREW__.val = load i1, i1* @__THREW__
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; CHECK-NEXT: %cmp = icmp eq i1 %__THREW__.val, false
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; CHECK-NEXT: br i1 %cmp, label %if.then, label %if.end
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; CHECK: if.then:
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; CHECK-NEXT: store i1 %threw, i1* @__THREW__
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; CHECK-NEXT: store i32 %value, i32* @threwValue
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; CHECK-NEXT: br label %if.end
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; CHECK: if.end:
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; CHECK-NEXT: ret void
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; CHECK: }
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; setTempRet0 function creation
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; CHECK-LABEL: define void @setTempRet0(i32 %value) {
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; CHECK: entry:
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; CHECK-NEXT: store i32 %value, i32* @tempRet0
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; CHECK-NEXT: ret void
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; CHECK: }
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