| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals |
| ; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT |
| ; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; Test cases specifically designed for the "undefined behavior" abstract function attribute. |
| ; We want to verify that whenever undefined behavior is assumed, the code becomes unreachable. |
| ; We use FIXME's to indicate problems and missing attributes. |
| |
| ; -- Load tests -- |
| |
| define void @load_wholly_unreachable() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@load_wholly_unreachable |
| ; CHECK-SAME: () #[[ATTR0:[0-9]+]] { |
| ; CHECK-NEXT: unreachable |
| ; |
| %a = load i32, ptr null |
| ret void |
| } |
| |
| define void @loads_wholly_unreachable() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@loads_wholly_unreachable |
| ; CHECK-SAME: () #[[ATTR0]] { |
| ; CHECK-NEXT: unreachable |
| ; |
| %a = load i32, ptr null |
| %b = load i32, ptr null |
| ret void |
| } |
| |
| |
| define void @load_single_bb_unreachable(i1 %cond) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@load_single_bb_unreachable |
| ; CHECK-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; CHECK: t: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: e: |
| ; CHECK-NEXT: ret void |
| ; |
| br i1 %cond, label %t, label %e |
| t: |
| %b = load i32, ptr null |
| br label %e |
| e: |
| ret void |
| } |
| |
| ; Note that while the load is removed (because it's unused), the block |
| ; is not changed to unreachable |
| define void @load_null_pointer_is_defined() null_pointer_is_valid { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@load_null_pointer_is_defined |
| ; CHECK-SAME: () #[[ATTR1:[0-9]+]] { |
| ; CHECK-NEXT: ret void |
| ; |
| %a = load i32, ptr null |
| ret void |
| } |
| |
| define internal ptr @ret_null() { |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@ret_null |
| ; CGSCC-SAME: () #[[ATTR0]] { |
| ; CGSCC-NEXT: ret ptr null |
| ; |
| ret ptr null |
| } |
| |
| define void @load_null_propagated() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@load_null_propagated |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@load_null_propagated |
| ; CGSCC-SAME: () #[[ATTR2:[0-9]+]] { |
| ; CGSCC-NEXT: ret void |
| ; |
| %ptr = call ptr @ret_null() |
| %a = load i32, ptr %ptr |
| ret void |
| } |
| |
| ; -- Store tests -- |
| |
| define void @store_wholly_unreachable() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@store_wholly_unreachable |
| ; CHECK-SAME: () #[[ATTR0]] { |
| ; CHECK-NEXT: unreachable |
| ; |
| store i32 5, ptr null |
| ret void |
| } |
| |
| define void @store_wholly_unreachable_volatile() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@store_wholly_unreachable_volatile |
| ; TUNIT-SAME: () #[[ATTR2:[0-9]+]] { |
| ; TUNIT-NEXT: store volatile i32 5, ptr null, align 4294967296 |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@store_wholly_unreachable_volatile |
| ; CGSCC-SAME: () #[[ATTR3:[0-9]+]] { |
| ; CGSCC-NEXT: store volatile i32 5, ptr null, align 4294967296 |
| ; CGSCC-NEXT: ret void |
| ; |
| store volatile i32 5, ptr null |
| ret void |
| } |
| |
| define void @store_single_bb_unreachable(i1 %cond) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@store_single_bb_unreachable |
| ; CHECK-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; CHECK: t: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: e: |
| ; CHECK-NEXT: ret void |
| ; |
| br i1 %cond, label %t, label %e |
| t: |
| store i32 5, ptr null |
| br label %e |
| e: |
| ret void |
| } |
| |
| define void @store_null_pointer_is_defined() null_pointer_is_valid { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(write) |
| ; TUNIT-LABEL: define {{[^@]+}}@store_null_pointer_is_defined |
| ; TUNIT-SAME: () #[[ATTR3:[0-9]+]] { |
| ; TUNIT-NEXT: store i32 5, ptr null, align 4294967296 |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(write) |
| ; CGSCC-LABEL: define {{[^@]+}}@store_null_pointer_is_defined |
| ; CGSCC-SAME: () #[[ATTR4:[0-9]+]] { |
| ; CGSCC-NEXT: store i32 5, ptr null, align 4294967296 |
| ; CGSCC-NEXT: ret void |
| ; |
| store i32 5, ptr null |
| ret void |
| } |
| |
| define void @store_null_propagated() { |
| ; ATTRIBUTOR-LABEL: @store_null_propagated( |
| ; ATTRIBUTOR-NEXT: unreachable |
| ; |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@store_null_propagated |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write) |
| ; CGSCC-LABEL: define {{[^@]+}}@store_null_propagated |
| ; CGSCC-SAME: () #[[ATTR5:[0-9]+]] { |
| ; CGSCC-NEXT: [[PTR:%.*]] = call noalias align 4294967296 ptr @ret_null() #[[ATTR10:[0-9]+]] |
| ; CGSCC-NEXT: ret void |
| ; |
| %ptr = call ptr @ret_null() |
| store i32 5, ptr %ptr |
| ret void |
| } |
| |
| ; -- AtomicRMW tests -- |
| |
| define void @atomicrmw_wholly_unreachable() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@atomicrmw_wholly_unreachable |
| ; TUNIT-SAME: () #[[ATTR2]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@atomicrmw_wholly_unreachable |
| ; CGSCC-SAME: () #[[ATTR3]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| %a = atomicrmw add ptr null, i32 1 acquire |
| ret void |
| } |
| |
| define void @atomicrmw_single_bb_unreachable(i1 %cond) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@atomicrmw_single_bb_unreachable |
| ; TUNIT-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR2]] { |
| ; TUNIT-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@atomicrmw_single_bb_unreachable |
| ; CGSCC-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR3]] { |
| ; CGSCC-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: e: |
| ; CGSCC-NEXT: ret void |
| ; |
| br i1 %cond, label %t, label %e |
| t: |
| %a = atomicrmw add ptr null, i32 1 acquire |
| br label %e |
| e: |
| ret void |
| } |
| |
| define void @atomicrmw_null_pointer_is_defined() null_pointer_is_valid { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind null_pointer_is_valid willreturn |
| ; TUNIT-LABEL: define {{[^@]+}}@atomicrmw_null_pointer_is_defined |
| ; TUNIT-SAME: () #[[ATTR4:[0-9]+]] { |
| ; TUNIT-NEXT: [[A:%.*]] = atomicrmw add ptr null, i32 1 acquire, align 4 |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind null_pointer_is_valid willreturn |
| ; CGSCC-LABEL: define {{[^@]+}}@atomicrmw_null_pointer_is_defined |
| ; CGSCC-SAME: () #[[ATTR6:[0-9]+]] { |
| ; CGSCC-NEXT: [[A:%.*]] = atomicrmw add ptr null, i32 1 acquire, align 4 |
| ; CGSCC-NEXT: ret void |
| ; |
| %a = atomicrmw add ptr null, i32 1 acquire |
| ret void |
| } |
| |
| define void @atomicrmw_null_propagated() { |
| ; ATTRIBUTOR-LABEL: @atomicrmw_null_propagated( |
| ; ATTRIBUTOR-NEXT: unreachable |
| ; |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@atomicrmw_null_propagated |
| ; TUNIT-SAME: () #[[ATTR2]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nounwind willreturn |
| ; CGSCC-LABEL: define {{[^@]+}}@atomicrmw_null_propagated |
| ; CGSCC-SAME: () #[[ATTR7:[0-9]+]] { |
| ; CGSCC-NEXT: [[PTR:%.*]] = call noalias ptr @ret_null() #[[ATTR11:[0-9]+]] |
| ; CGSCC-NEXT: [[A:%.*]] = atomicrmw add ptr [[PTR]], i32 1 acquire, align 4 |
| ; CGSCC-NEXT: ret void |
| ; |
| %ptr = call ptr @ret_null() |
| %a = atomicrmw add ptr %ptr, i32 1 acquire |
| ret void |
| } |
| |
| ; -- AtomicCmpXchg tests -- |
| |
| define void @atomiccmpxchg_wholly_unreachable() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@atomiccmpxchg_wholly_unreachable |
| ; TUNIT-SAME: () #[[ATTR2]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@atomiccmpxchg_wholly_unreachable |
| ; CGSCC-SAME: () #[[ATTR3]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| %a = cmpxchg ptr null, i32 2, i32 3 acq_rel monotonic |
| ret void |
| } |
| |
| define void @atomiccmpxchg_single_bb_unreachable(i1 %cond) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@atomiccmpxchg_single_bb_unreachable |
| ; TUNIT-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR2]] { |
| ; TUNIT-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@atomiccmpxchg_single_bb_unreachable |
| ; CGSCC-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR3]] { |
| ; CGSCC-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: e: |
| ; CGSCC-NEXT: ret void |
| ; |
| br i1 %cond, label %t, label %e |
| t: |
| %a = cmpxchg ptr null, i32 2, i32 3 acq_rel monotonic |
| br label %e |
| e: |
| ret void |
| } |
| |
| define void @atomiccmpxchg_null_pointer_is_defined() null_pointer_is_valid { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind null_pointer_is_valid willreturn |
| ; TUNIT-LABEL: define {{[^@]+}}@atomiccmpxchg_null_pointer_is_defined |
| ; TUNIT-SAME: () #[[ATTR4]] { |
| ; TUNIT-NEXT: [[A:%.*]] = cmpxchg ptr null, i32 2, i32 3 acq_rel monotonic, align 4 |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind null_pointer_is_valid willreturn |
| ; CGSCC-LABEL: define {{[^@]+}}@atomiccmpxchg_null_pointer_is_defined |
| ; CGSCC-SAME: () #[[ATTR6]] { |
| ; CGSCC-NEXT: [[A:%.*]] = cmpxchg ptr null, i32 2, i32 3 acq_rel monotonic, align 4 |
| ; CGSCC-NEXT: ret void |
| ; |
| %a = cmpxchg ptr null, i32 2, i32 3 acq_rel monotonic |
| ret void |
| } |
| |
| define void @atomiccmpxchg_null_propagated() { |
| ; ATTRIBUTOR-LABEL: @atomiccmpxchg_null_propagated( |
| ; ATTRIBUTOR-NEXT: unreachable |
| ; |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@atomiccmpxchg_null_propagated |
| ; TUNIT-SAME: () #[[ATTR2]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nounwind willreturn |
| ; CGSCC-LABEL: define {{[^@]+}}@atomiccmpxchg_null_propagated |
| ; CGSCC-SAME: () #[[ATTR7]] { |
| ; CGSCC-NEXT: [[PTR:%.*]] = call noalias ptr @ret_null() #[[ATTR11]] |
| ; CGSCC-NEXT: [[A:%.*]] = cmpxchg ptr [[PTR]], i32 2, i32 3 acq_rel monotonic, align 4 |
| ; CGSCC-NEXT: ret void |
| ; |
| %ptr = call ptr @ret_null() |
| %a = cmpxchg ptr %ptr, i32 2, i32 3 acq_rel monotonic |
| ret void |
| } |
| |
| ; -- Conditional branching tests -- |
| |
| ; Note: The unreachable on %t and %e is _not_ from AAUndefinedBehavior |
| |
| define i32 @cond_br_on_undef() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@cond_br_on_undef |
| ; TUNIT-SAME: () #[[ATTR5:[0-9]+]] { |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@cond_br_on_undef |
| ; CGSCC-SAME: () #[[ATTR8:[0-9]+]] { |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: t: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: e: |
| ; CGSCC-NEXT: unreachable |
| ; |
| br i1 undef, label %t, label %e |
| t: |
| ret i32 1 |
| e: |
| ret i32 2 |
| } |
| |
| ; More complicated branching |
| ; Valid branch - verify that this is not converted |
| ; to unreachable. |
| define void @cond_br_on_undef2(i1 %cond) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@cond_br_on_undef2 |
| ; CHECK-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: br i1 [[COND]], label [[T1:%.*]], label [[E1:%.*]] |
| ; CHECK: t1: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: t2: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: e2: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: e1: |
| ; CHECK-NEXT: ret void |
| ; |
| br i1 %cond, label %t1, label %e1 |
| t1: |
| br i1 undef, label %t2, label %e2 |
| t2: |
| ret void |
| e2: |
| ret void |
| e1: |
| ret void |
| } |
| |
| define i1 @ret_undef() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@ret_undef |
| ; CHECK-SAME: () #[[ATTR0]] { |
| ; CHECK-NEXT: ret i1 undef |
| ; |
| ret i1 undef |
| } |
| |
| define void @cond_br_on_undef_interproc() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@cond_br_on_undef_interproc |
| ; TUNIT-SAME: () #[[ATTR5]] { |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@cond_br_on_undef_interproc |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: [[COND:%.*]] = call i1 @ret_undef() #[[ATTR10]] |
| ; CGSCC-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: ret void |
| ; CGSCC: e: |
| ; CGSCC-NEXT: ret void |
| ; |
| %cond = call i1 @ret_undef() |
| br i1 %cond, label %t, label %e |
| t: |
| ret void |
| e: |
| ret void |
| } |
| |
| define i1 @ret_undef2() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@ret_undef2 |
| ; CHECK-SAME: () #[[ATTR0]] { |
| ; CHECK-NEXT: br i1 true, label [[T:%.*]], label [[E:%.*]] |
| ; CHECK: t: |
| ; CHECK-NEXT: ret i1 undef |
| ; CHECK: e: |
| ; CHECK-NEXT: unreachable |
| ; |
| br i1 true, label %t, label %e |
| t: |
| ret i1 undef |
| e: |
| ret i1 undef |
| } |
| |
| ; More complicated interproc deduction of undef |
| define void @cond_br_on_undef_interproc2() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@cond_br_on_undef_interproc2 |
| ; TUNIT-SAME: () #[[ATTR5]] { |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@cond_br_on_undef_interproc2 |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: [[COND:%.*]] = call i1 @ret_undef2() #[[ATTR10]] |
| ; CGSCC-NEXT: br i1 [[COND]], label [[T:%.*]], label [[E:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: ret void |
| ; CGSCC: e: |
| ; CGSCC-NEXT: ret void |
| ; |
| %cond = call i1 @ret_undef2() |
| br i1 %cond, label %t, label %e |
| t: |
| ret void |
| e: |
| ret void |
| } |
| |
| ; Branch on undef that depends on propagation of |
| ; undef of a previous instruction. |
| define i32 @cond_br_on_undef3() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@cond_br_on_undef3 |
| ; TUNIT-SAME: () #[[ATTR5]] { |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@cond_br_on_undef3 |
| ; CGSCC-SAME: () #[[ATTR8]] { |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: t: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: e: |
| ; CGSCC-NEXT: unreachable |
| ; |
| %cond = icmp ne i32 1, undef |
| br i1 %cond, label %t, label %e |
| t: |
| ret i32 1 |
| e: |
| ret i32 2 |
| } |
| |
| ; Branch on undef because of uninitialized value. |
| ; FIXME: Currently it doesn't propagate the undef. |
| define i32 @cond_br_on_undef_uninit() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@cond_br_on_undef_uninit |
| ; TUNIT-SAME: () #[[ATTR5]] { |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: t: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: e: |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@cond_br_on_undef_uninit |
| ; CGSCC-SAME: () #[[ATTR8]] { |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: t: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: e: |
| ; CGSCC-NEXT: unreachable |
| ; |
| %alloc = alloca i1 |
| %cond = load i1, ptr %alloc |
| br i1 %cond, label %t, label %e |
| t: |
| ret i32 1 |
| e: |
| ret i32 2 |
| } |
| |
| ; Note that the `load` has UB (so it will be changed to unreachable) |
| ; and the branch is a terminator that can be constant-folded. |
| ; We want to test that doing both won't cause a segfault. |
| ; MODULE-NOT: @callee( |
| define internal i32 @callee(i1 %C, ptr %A) { |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@callee |
| ; CGSCC-SAME: () #[[ATTR0]] { |
| ; CGSCC-NEXT: entry: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: T: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: F: |
| ; CGSCC-NEXT: ret i32 1 |
| ; |
| entry: |
| %A.0 = load i32, ptr null |
| br i1 %C, label %T, label %F |
| |
| T: |
| ret i32 %A.0 |
| |
| F: |
| ret i32 1 |
| } |
| |
| define i32 @foo() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@foo |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: ret i32 1 |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@foo |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: [[X:%.*]] = call noundef i32 @callee() #[[ATTR10]] |
| ; CGSCC-NEXT: ret i32 [[X]] |
| ; |
| %X = call i32 @callee(i1 false, ptr null) |
| ret i32 %X |
| } |
| |
| ; Tests for nonnull noundef attribute violation. |
| ; |
| ; Tests for argument position |
| |
| define void @arg_nonnull_1(ptr nonnull %a) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_1 |
| ; TUNIT-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A:%.*]]) #[[ATTR6:[0-9]+]] { |
| ; TUNIT-NEXT: store i32 0, ptr [[A]], align 4 |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_1 |
| ; CGSCC-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A:%.*]]) #[[ATTR9:[0-9]+]] { |
| ; CGSCC-NEXT: store i32 0, ptr [[A]], align 4 |
| ; CGSCC-NEXT: ret void |
| ; |
| store i32 0, ptr %a |
| ret void |
| } |
| |
| define void @arg_nonnull_1_noundef_1(ptr nonnull noundef %a) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_1_noundef_1 |
| ; TUNIT-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A:%.*]]) #[[ATTR6]] { |
| ; TUNIT-NEXT: store i32 0, ptr [[A]], align 4 |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_1_noundef_1 |
| ; CGSCC-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A:%.*]]) #[[ATTR9]] { |
| ; CGSCC-NEXT: store i32 0, ptr [[A]], align 4 |
| ; CGSCC-NEXT: ret void |
| ; |
| store i32 0, ptr %a |
| ret void |
| } |
| |
| define void @arg_nonnull_12(ptr nonnull %a, ptr nonnull %b, ptr %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_12 |
| ; TUNIT-SAME: (ptr nocapture nofree nonnull writeonly [[A:%.*]], ptr nocapture nofree nonnull writeonly [[B:%.*]], ptr nofree writeonly [[C:%.*]]) #[[ATTR6]] { |
| ; TUNIT-NEXT: [[D:%.*]] = icmp eq ptr [[C]], null |
| ; TUNIT-NEXT: br i1 [[D]], label [[T:%.*]], label [[F:%.*]] |
| ; TUNIT: t: |
| ; TUNIT-NEXT: store i32 0, ptr [[A]], align 4 |
| ; TUNIT-NEXT: br label [[RET:%.*]] |
| ; TUNIT: f: |
| ; TUNIT-NEXT: store i32 1, ptr [[B]], align 4 |
| ; TUNIT-NEXT: br label [[RET]] |
| ; TUNIT: ret: |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_12 |
| ; CGSCC-SAME: (ptr nocapture nofree nonnull writeonly [[A:%.*]], ptr nocapture nofree nonnull writeonly [[B:%.*]], ptr nofree writeonly [[C:%.*]]) #[[ATTR9]] { |
| ; CGSCC-NEXT: [[D:%.*]] = icmp eq ptr [[C]], null |
| ; CGSCC-NEXT: br i1 [[D]], label [[T:%.*]], label [[F:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: store i32 0, ptr [[A]], align 4 |
| ; CGSCC-NEXT: br label [[RET:%.*]] |
| ; CGSCC: f: |
| ; CGSCC-NEXT: store i32 1, ptr [[B]], align 4 |
| ; CGSCC-NEXT: br label [[RET]] |
| ; CGSCC: ret: |
| ; CGSCC-NEXT: ret void |
| ; |
| %d = icmp eq ptr %c, null |
| br i1 %d, label %t, label %f |
| t: |
| store i32 0, ptr %a |
| br label %ret |
| f: |
| store i32 1, ptr %b |
| br label %ret |
| ret: |
| ret void |
| } |
| |
| define void @arg_nonnull_12_noundef_2(ptr nonnull %a, ptr noundef nonnull %b, ptr %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_12_noundef_2 |
| ; TUNIT-SAME: (ptr nocapture nofree nonnull writeonly [[A:%.*]], ptr nocapture nofree noundef nonnull writeonly [[B:%.*]], ptr nofree writeonly [[C:%.*]]) #[[ATTR6]] { |
| ; TUNIT-NEXT: [[D:%.*]] = icmp eq ptr [[C]], null |
| ; TUNIT-NEXT: br i1 [[D]], label [[T:%.*]], label [[F:%.*]] |
| ; TUNIT: t: |
| ; TUNIT-NEXT: store i32 0, ptr [[A]], align 4 |
| ; TUNIT-NEXT: br label [[RET:%.*]] |
| ; TUNIT: f: |
| ; TUNIT-NEXT: store i32 1, ptr [[B]], align 4 |
| ; TUNIT-NEXT: br label [[RET]] |
| ; TUNIT: ret: |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_12_noundef_2 |
| ; CGSCC-SAME: (ptr nocapture nofree nonnull writeonly [[A:%.*]], ptr nocapture nofree noundef nonnull writeonly [[B:%.*]], ptr nofree writeonly [[C:%.*]]) #[[ATTR9]] { |
| ; CGSCC-NEXT: [[D:%.*]] = icmp eq ptr [[C]], null |
| ; CGSCC-NEXT: br i1 [[D]], label [[T:%.*]], label [[F:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: store i32 0, ptr [[A]], align 4 |
| ; CGSCC-NEXT: br label [[RET:%.*]] |
| ; CGSCC: f: |
| ; CGSCC-NEXT: store i32 1, ptr [[B]], align 4 |
| ; CGSCC-NEXT: br label [[RET]] |
| ; CGSCC: ret: |
| ; CGSCC-NEXT: ret void |
| ; |
| %d = icmp eq ptr %c, null |
| br i1 %d, label %t, label %f |
| t: |
| store i32 0, ptr %a |
| br label %ret |
| f: |
| store i32 1, ptr %b |
| br label %ret |
| ret: |
| ret void |
| } |
| |
| ; Pass null directly to argument with nonnull attribute |
| define void @arg_nonnull_violation1_1() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_violation1_1 |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_violation1_1 |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| call void @arg_nonnull_1(ptr null) |
| ret void |
| } |
| |
| define void @arg_nonnull_violation1_2() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_violation1_2 |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_violation1_2 |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| call void @arg_nonnull_1_noundef_1(ptr null) |
| ret void |
| } |
| |
| ; A case that depends on value simplification |
| define void @arg_nonnull_violation2_1(i1 %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_violation2_1 |
| ; TUNIT-SAME: (i1 [[C:%.*]]) #[[ATTR0]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_violation2_1 |
| ; CGSCC-SAME: (i1 [[C:%.*]]) #[[ATTR2]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| %mustnull = select i1 %c, ptr null, ptr null |
| call void @arg_nonnull_1(ptr %mustnull) |
| ret void |
| } |
| |
| define void @arg_nonnull_violation2_2(i1 %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_violation2_2 |
| ; TUNIT-SAME: (i1 [[C:%.*]]) #[[ATTR0]] { |
| ; TUNIT-NEXT: unreachable |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_violation2_2 |
| ; CGSCC-SAME: (i1 [[C:%.*]]) #[[ATTR2]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| %mustnull = select i1 %c, ptr null, ptr null |
| call void @arg_nonnull_1_noundef_1(ptr %mustnull) |
| ret void |
| } |
| |
| ; Cases for single and multiple violation at a callsite |
| define void @arg_nonnull_violation3_1(i1 %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_violation3_1 |
| ; TUNIT-SAME: (i1 noundef [[C:%.*]]) #[[ATTR0]] { |
| ; TUNIT-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] |
| ; TUNIT: t: |
| ; TUNIT-NEXT: call void @arg_nonnull_12(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) #[[ATTR7:[0-9]+]] |
| ; TUNIT-NEXT: call void @arg_nonnull_12(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef writeonly align 4294967296 null) #[[ATTR7]] |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: f: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: ret: |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_violation3_1 |
| ; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR2]] { |
| ; CGSCC-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: call void @arg_nonnull_12(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) #[[ATTR12:[0-9]+]] |
| ; CGSCC-NEXT: call void @arg_nonnull_12(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef writeonly align 4294967296 null) #[[ATTR12]] |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: f: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: ret: |
| ; CGSCC-NEXT: ret void |
| ; |
| %ptr = alloca i32 |
| br i1 %c, label %t, label %f |
| t: |
| call void @arg_nonnull_12(ptr %ptr, ptr %ptr, ptr %ptr) |
| call void @arg_nonnull_12(ptr %ptr, ptr %ptr, ptr null) |
| call void @arg_nonnull_12(ptr %ptr, ptr null, ptr %ptr) |
| call void @arg_nonnull_12(ptr %ptr, ptr null, ptr null) |
| br label %ret |
| f: |
| call void @arg_nonnull_12(ptr null, ptr %ptr, ptr %ptr) |
| call void @arg_nonnull_12(ptr null, ptr %ptr, ptr null) |
| call void @arg_nonnull_12(ptr null, ptr null, ptr %ptr) |
| call void @arg_nonnull_12(ptr null, ptr null, ptr null) |
| br label %ret |
| ret: |
| ret void |
| } |
| |
| define void @arg_nonnull_violation3_2(i1 %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@arg_nonnull_violation3_2 |
| ; TUNIT-SAME: (i1 noundef [[C:%.*]]) #[[ATTR0]] { |
| ; TUNIT-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] |
| ; TUNIT: t: |
| ; TUNIT-NEXT: call void @arg_nonnull_12_noundef_2(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) #[[ATTR7]] |
| ; TUNIT-NEXT: call void @arg_nonnull_12_noundef_2(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef writeonly align 4294967296 null) #[[ATTR7]] |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: f: |
| ; TUNIT-NEXT: unreachable |
| ; TUNIT: ret: |
| ; TUNIT-NEXT: ret void |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@arg_nonnull_violation3_2 |
| ; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR2]] { |
| ; CGSCC-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] |
| ; CGSCC: t: |
| ; CGSCC-NEXT: call void @arg_nonnull_12_noundef_2(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) #[[ATTR12]] |
| ; CGSCC-NEXT: call void @arg_nonnull_12_noundef_2(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], ptr nofree noundef writeonly align 4294967296 null) #[[ATTR12]] |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: f: |
| ; CGSCC-NEXT: unreachable |
| ; CGSCC: ret: |
| ; CGSCC-NEXT: ret void |
| ; |
| %ptr = alloca i32 |
| br i1 %c, label %t, label %f |
| t: |
| call void @arg_nonnull_12_noundef_2(ptr %ptr, ptr %ptr, ptr %ptr) |
| call void @arg_nonnull_12_noundef_2(ptr %ptr, ptr %ptr, ptr null) |
| call void @arg_nonnull_12_noundef_2(ptr %ptr, ptr null, ptr %ptr) |
| call void @arg_nonnull_12_noundef_2(ptr %ptr, ptr null, ptr null) |
| br label %ret |
| f: |
| call void @arg_nonnull_12_noundef_2(ptr null, ptr %ptr, ptr %ptr) |
| call void @arg_nonnull_12_noundef_2(ptr null, ptr %ptr, ptr null) |
| call void @arg_nonnull_12_noundef_2(ptr null, ptr null, ptr %ptr) |
| call void @arg_nonnull_12_noundef_2(ptr null, ptr null, ptr null) |
| br label %ret |
| ret: |
| ret void |
| } |
| |
| ; Tests for returned position |
| |
| define nonnull ptr @returned_nonnnull(i32 %c) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@returned_nonnnull |
| ; CHECK-SAME: (i32 noundef [[C:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: switch i32 [[C]], label [[ONDEFAULT:%.*]] [ |
| ; CHECK-NEXT: i32 0, label [[ONZERO:%.*]] |
| ; CHECK-NEXT: i32 1, label [[ONONE:%.*]] |
| ; CHECK-NEXT: ] |
| ; CHECK: onzero: |
| ; CHECK-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; CHECK-NEXT: ret ptr [[PTR]] |
| ; CHECK: onone: |
| ; CHECK-NEXT: ret ptr null |
| ; CHECK: ondefault: |
| ; CHECK-NEXT: ret ptr undef |
| ; |
| switch i32 %c, label %ondefault [ i32 0, label %onzero |
| i32 1, label %onone ] |
| onzero: |
| %ptr = alloca i32 |
| ret ptr %ptr |
| onone: |
| ret ptr null |
| ondefault: |
| ret ptr undef |
| } |
| |
| define noundef ptr @returned_noundef(i32 %c) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@returned_noundef |
| ; CHECK-SAME: (i32 noundef [[C:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: switch i32 [[C]], label [[ONDEFAULT:%.*]] [ |
| ; CHECK-NEXT: i32 0, label [[ONZERO:%.*]] |
| ; CHECK-NEXT: i32 1, label [[ONONE:%.*]] |
| ; CHECK-NEXT: ] |
| ; CHECK: onzero: |
| ; CHECK-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; CHECK-NEXT: ret ptr [[PTR]] |
| ; CHECK: onone: |
| ; CHECK-NEXT: ret ptr null |
| ; CHECK: ondefault: |
| ; CHECK-NEXT: unreachable |
| ; |
| switch i32 %c, label %ondefault [ i32 0, label %onzero |
| i32 1, label %onone ] |
| onzero: |
| %ptr = alloca i32 |
| ret ptr %ptr |
| onone: |
| ret ptr null |
| ondefault: |
| ret ptr undef |
| } |
| |
| define nonnull noundef ptr @returned_nonnnull_noundef(i32 %c) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@returned_nonnnull_noundef |
| ; CHECK-SAME: (i32 noundef [[C:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: switch i32 [[C]], label [[ONDEFAULT:%.*]] [ |
| ; CHECK-NEXT: i32 0, label [[ONZERO:%.*]] |
| ; CHECK-NEXT: i32 1, label [[ONONE:%.*]] |
| ; CHECK-NEXT: ] |
| ; CHECK: onzero: |
| ; CHECK-NEXT: [[PTR:%.*]] = alloca i32, align 4 |
| ; CHECK-NEXT: ret ptr [[PTR]] |
| ; CHECK: onone: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: ondefault: |
| ; CHECK-NEXT: unreachable |
| ; |
| switch i32 %c, label %ondefault [ i32 0, label %onzero |
| i32 1, label %onone ] |
| onzero: |
| %ptr = alloca i32 |
| ret ptr %ptr |
| onone: |
| ret ptr null |
| ondefault: |
| ret ptr undef |
| } |
| |
| define noundef i32 @returned_nonnnull_noundef_int() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@returned_nonnnull_noundef_int |
| ; CHECK-SAME: () #[[ATTR0]] { |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| ret i32 0 |
| } |
| |
| declare void @callee_int_arg(i32) |
| |
| define void @callsite_noundef_1() { |
| ; CHECK-LABEL: define {{[^@]+}}@callsite_noundef_1() { |
| ; CHECK-NEXT: call void @callee_int_arg(i32 noundef 0) |
| ; CHECK-NEXT: ret void |
| ; |
| call void @callee_int_arg(i32 noundef 0) |
| ret void |
| } |
| |
| declare void @callee_ptr_arg(ptr) |
| |
| define void @callsite_noundef_2() { |
| ; CHECK-LABEL: define {{[^@]+}}@callsite_noundef_2() { |
| ; CHECK-NEXT: unreachable |
| ; |
| call void @callee_ptr_arg(ptr noundef undef) |
| ret void |
| } |
| |
| define i32 @argument_noundef1(i32 noundef %c) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@argument_noundef1 |
| ; CHECK-SAME: (i32 noundef returned [[C:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| ret i32 %c |
| } |
| |
| define i32 @violate_noundef_nonpointer() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@violate_noundef_nonpointer |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: ret i32 undef |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@violate_noundef_nonpointer |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: unreachable |
| ; |
| %ret = call i32 @argument_noundef1(i32 undef) |
| ret i32 %ret |
| } |
| |
| define ptr @argument_noundef2(ptr noundef %c) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: define {{[^@]+}}@argument_noundef2 |
| ; CHECK-SAME: (ptr nofree noundef readnone returned "no-capture-maybe-returned" [[C:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: ret ptr [[C]] |
| ; |
| ret ptr %c |
| } |
| |
| define ptr @violate_noundef_pointer() { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@violate_noundef_pointer |
| ; TUNIT-SAME: () #[[ATTR0]] { |
| ; TUNIT-NEXT: ret ptr undef |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@violate_noundef_pointer |
| ; CGSCC-SAME: () #[[ATTR2]] { |
| ; CGSCC-NEXT: ret ptr undef |
| ; |
| %ret = call ptr @argument_noundef2(ptr undef) |
| ret ptr %ret |
| } |
| |
| define internal noundef i32 @assumed_undef_is_ok(i1 %c, i32 %arg) { |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@assumed_undef_is_ok |
| ; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR2]] { |
| ; CGSCC-NEXT: br i1 [[C]], label [[REC:%.*]], label [[RET:%.*]] |
| ; CGSCC: rec: |
| ; CGSCC-NEXT: br label [[RET]] |
| ; CGSCC: ret: |
| ; CGSCC-NEXT: ret i32 0 |
| ; |
| %stack = alloca i32 |
| store i32 %arg, ptr %stack |
| br i1 %c, label %rec, label %ret |
| rec: |
| %call = call i32 @assumed_undef_is_ok(i1 false, i32 0) |
| store i32 %call, ptr %stack |
| br label %ret |
| ret: |
| %l = load i32, ptr %stack |
| ret i32 %l |
| } |
| |
| define noundef i32 @assumed_undef_is_ok_caller(i1 %c) { |
| ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; TUNIT-LABEL: define {{[^@]+}}@assumed_undef_is_ok_caller |
| ; TUNIT-SAME: (i1 [[C:%.*]]) #[[ATTR0]] { |
| ; TUNIT-NEXT: ret i32 0 |
| ; |
| ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) |
| ; CGSCC-LABEL: define {{[^@]+}}@assumed_undef_is_ok_caller |
| ; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR2]] { |
| ; CGSCC-NEXT: [[CALL:%.*]] = call i32 @assumed_undef_is_ok(i1 noundef [[C]]) #[[ATTR10]] |
| ; CGSCC-NEXT: ret i32 [[CALL]] |
| ; |
| %call = call i32 @assumed_undef_is_ok(i1 %c, i32 undef) |
| ret i32 %call |
| } |
| |
| ;. |
| ; TUNIT: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) } |
| ; TUNIT: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) } |
| ; TUNIT: attributes #[[ATTR2]] = { mustprogress nofree norecurse nounwind willreturn memory(none) } |
| ; TUNIT: attributes #[[ATTR3]] = { mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(write) } |
| ; TUNIT: attributes #[[ATTR4]] = { mustprogress nofree norecurse nounwind null_pointer_is_valid willreturn } |
| ; TUNIT: attributes #[[ATTR5]] = { mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) } |
| ; TUNIT: attributes #[[ATTR6]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) } |
| ; TUNIT: attributes #[[ATTR7]] = { nofree nosync nounwind willreturn memory(write) } |
| ;. |
| ; CGSCC: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) } |
| ; CGSCC: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) } |
| ; CGSCC: attributes #[[ATTR2]] = { mustprogress nofree nosync nounwind willreturn memory(none) } |
| ; CGSCC: attributes #[[ATTR3]] = { mustprogress nofree norecurse nounwind willreturn memory(none) } |
| ; CGSCC: attributes #[[ATTR4]] = { mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(write) } |
| ; CGSCC: attributes #[[ATTR5]] = { mustprogress nofree nosync nounwind willreturn memory(write) } |
| ; CGSCC: attributes #[[ATTR6]] = { mustprogress nofree norecurse nounwind null_pointer_is_valid willreturn } |
| ; CGSCC: attributes #[[ATTR7]] = { mustprogress nofree nounwind willreturn } |
| ; CGSCC: attributes #[[ATTR8]] = { mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) } |
| ; CGSCC: attributes #[[ATTR9]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) } |
| ; CGSCC: attributes #[[ATTR10]] = { nofree nosync willreturn } |
| ; CGSCC: attributes #[[ATTR11]] = { nofree willreturn } |
| ; CGSCC: attributes #[[ATTR12]] = { nofree nounwind willreturn memory(write) } |
| ;. |