e44b11d9b6
We were already treating branch on poison as UB, but branch on undef is also UB. Move the checks into the correct function. From LangRef for br: > If ‘cond’ is poison or undef, this instruction has undefined behavior. From LangRef for switch: > If ‘value’ is poison or undef, this instruction has undefined behavior. There is a minor regression in dont-distribute-phi.ll, apparently we handle that pattern in logical but not bitwise form.
153 lines
4.5 KiB
LLVM
153 lines
4.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=2 -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC
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; TEST 1
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define i32 @foo1() {
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; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(none)
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; CHECK-LABEL: define {{[^@]+}}@foo1
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; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: ret i32 1
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;
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ret i32 1
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}
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; TEST 2
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define i32 @scc1_foo() {
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; TUNIT: Function Attrs: nofree nosync nounwind willreturn memory(none)
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; TUNIT-LABEL: define {{[^@]+}}@scc1_foo
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; TUNIT-SAME: () #[[ATTR1:[0-9]+]] {
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; TUNIT-NEXT: ret i32 1
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;
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; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(none)
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; CGSCC-LABEL: define {{[^@]+}}@scc1_foo
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; CGSCC-SAME: () #[[ATTR0]] {
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; CGSCC-NEXT: ret i32 1
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;
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%1 = call i32 @scc1_bar()
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ret i32 1
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}
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; TEST 3
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define i32 @scc1_bar() {
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; TUNIT: Function Attrs: nofree nosync nounwind willreturn memory(none)
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; TUNIT-LABEL: define {{[^@]+}}@scc1_bar
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; TUNIT-SAME: () #[[ATTR1]] {
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; TUNIT-NEXT: ret i32 1
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;
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; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(none)
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; CGSCC-LABEL: define {{[^@]+}}@scc1_bar
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; CGSCC-SAME: () #[[ATTR0]] {
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; CGSCC-NEXT: ret i32 1
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;
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%1 = call i32 @scc1_foo()
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ret i32 1
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}
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declare i32 @non_nounwind()
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; TEST 4
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define void @call_non_nounwind(){
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; CHECK-LABEL: define {{[^@]+}}@call_non_nounwind() {
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; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 @non_nounwind()
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; CHECK-NEXT: ret void
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;
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tail call i32 @non_nounwind()
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ret void
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}
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; TEST 5 - throw
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; int maybe_throw(bool canThrow) {
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; if (canThrow)
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; throw;
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; else
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; return -1;
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; }
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define i32 @maybe_throw(i1 zeroext %0) {
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; CHECK-LABEL: define {{[^@]+}}@maybe_throw
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; CHECK-SAME: (i1 noundef zeroext [[TMP0:%.*]]) {
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; CHECK-NEXT: br i1 [[TMP0]], label [[TMP2:%.*]], label [[TMP3:%.*]]
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; CHECK: 2:
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; CHECK-NEXT: tail call void @__cxa_rethrow()
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; CHECK-NEXT: unreachable
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; CHECK: 3:
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; CHECK-NEXT: ret i32 -1
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;
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br i1 %0, label %2, label %3
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2: ; preds = %1
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tail call void @__cxa_rethrow() #1
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unreachable
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3: ; preds = %1
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ret i32 -1
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}
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declare void @__cxa_rethrow()
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; TEST 6 - catch
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; int catch_thing() {
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; try {
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; int a = doThing(true);
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; }
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; catch(...) { return -1; }
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; return 1;
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; }
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define i32 @catch_thing() personality ptr @__gxx_personality_v0 {
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; CHECK-LABEL: define {{[^@]+}}@catch_thing() personality ptr @__gxx_personality_v0 {
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; CHECK-NEXT: invoke void @__cxa_rethrow()
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; CHECK-NEXT: to label [[TMP1:%.*]] unwind label [[TMP2:%.*]]
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; CHECK: 1:
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; CHECK-NEXT: unreachable
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; CHECK: 2:
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; CHECK-NEXT: [[TMP3:%.*]] = landingpad { ptr, i32 }
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; CHECK-NEXT: catch ptr null
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; CHECK-NEXT: [[TMP4:%.*]] = extractvalue { ptr, i32 } [[TMP3]], 0
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; CHECK-NEXT: [[TMP5:%.*]] = tail call ptr @__cxa_begin_catch(ptr [[TMP4]])
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; CHECK-NEXT: tail call void @__cxa_end_catch()
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; CHECK-NEXT: ret i32 -1
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;
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invoke void @__cxa_rethrow() #1
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to label %1 unwind label %2
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1: ; preds = %0
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unreachable
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2: ; preds = %0
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%3 = landingpad { ptr, i32 }
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catch ptr null
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%4 = extractvalue { ptr, i32 } %3, 0
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%5 = tail call ptr @__cxa_begin_catch(ptr %4) #2
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tail call void @__cxa_end_catch()
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ret i32 -1
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}
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define i32 @catch_thing_user() {
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; TUNIT-LABEL: define {{[^@]+}}@catch_thing_user() {
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; TUNIT-NEXT: [[CATCH_THING_CALL:%.*]] = call i32 @catch_thing()
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; TUNIT-NEXT: ret i32 -1
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;
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; CGSCC-LABEL: define {{[^@]+}}@catch_thing_user() {
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; CGSCC-NEXT: [[CATCH_THING_CALL:%.*]] = call noundef i32 @catch_thing()
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; CGSCC-NEXT: ret i32 [[CATCH_THING_CALL]]
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;
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%catch_thing_call = call i32 @catch_thing()
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ret i32 %catch_thing_call
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}
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declare i32 @__gxx_personality_v0(...)
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declare ptr @__cxa_begin_catch(ptr)
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declare void @__cxa_end_catch()
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;.
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; TUNIT: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind willreturn memory(none) }
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; TUNIT: attributes #[[ATTR1]] = { nofree nosync nounwind willreturn memory(none) }
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;.
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; CGSCC: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind willreturn memory(none) }
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;.
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