nounwind.ll
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; RUN: opt < %s -attributor -attributor-disable=false -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=3 -S | FileCheck %s --check-prefix=ATTRIBUTOR
; Copied from Transforms/FunctoinAttrs/nounwind.ll
; TEST 1
; ATTRIBUTOR: Function Attrs: nofree nosync nounwind
; ATTRIBUTOR-NEXT: define i32 @foo1()
define i32 @foo1() {
ret i32 1
}
; TEST 2
; ATTRIBUTOR: Function Attrs: nofree noreturn nosync nounwind
; ATTRIBUTOR-NEXT: define i32 @scc1_foo()
define i32 @scc1_foo() {
%1 = call i32 @scc1_bar()
ret i32 1
}
; TEST 3
; ATTRIBUTOR: Function Attrs: nofree noreturn nosync nounwind
; ATTRIBUTOR-NEXT: define i32 @scc1_bar()
define i32 @scc1_bar() {
%1 = call i32 @scc1_foo()
ret i32 1
}
declare i32 @non_nounwind()
; TEST 4
; ATTRIBUTOR: define void @call_non_nounwind() {
define void @call_non_nounwind(){
tail call i32 @non_nounwind()
ret void
}
; TEST 5 - throw
; int maybe_throw(bool canThrow) {
; if (canThrow)
; throw;
; else
; return -1;
; }
; ATTRIBUTOR: define i32 @maybe_throw(i1 zeroext %0)
define i32 @maybe_throw(i1 zeroext %0) {
br i1 %0, label %2, label %3
2: ; preds = %1
tail call void @__cxa_rethrow() #1
unreachable
3: ; preds = %1
ret i32 -1
}
declare void @__cxa_rethrow()
; TEST 6 - catch
; int catch_thing() {
; try {
; int a = doThing(true);
; }
; catch(...) { return -1; }
; return 1;
; }
; ATTRIBUTOR: define i32 @catch_thing()
define i32 @catch_thing() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
invoke void @__cxa_rethrow() #1
to label %1 unwind label %2
1: ; preds = %0
unreachable
2: ; preds = %0
%3 = landingpad { i8*, i32 }
catch i8* null
%4 = extractvalue { i8*, i32 } %3, 0
%5 = tail call i8* @__cxa_begin_catch(i8* %4) #2
tail call void @__cxa_end_catch()
ret i32 -1
}
define i32 @catch_thing_user() {
; ATTRIBUTOR: define i32 @catch_thing_user
; ATTRIBUTOR-NEXT: %catch_thing_call = call
; ATTRIBUTOR-NEXT: ret i32 -1
%catch_thing_call = call i32 @catch_thing()
ret i32 %catch_thing_call
}
declare i32 @__gxx_personality_v0(...)
declare i8* @__cxa_begin_catch(i8*)
declare void @__cxa_end_catch()