| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| ; InstCombine should mark null-checked argument as nonnull at callsite |
| declare void @dummy(i32*, i32) |
| |
| define void @test(i32* %a, i32 %b) { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[COND1:%.*]] = icmp eq i32* [[A:%.*]], null |
| ; CHECK-NEXT: br i1 [[COND1]], label [[DEAD:%.*]], label [[NOT_NULL:%.*]] |
| ; CHECK: not_null: |
| ; CHECK-NEXT: [[COND2:%.*]] = icmp eq i32 [[B:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[COND2]], label [[DEAD]], label [[NOT_ZERO:%.*]] |
| ; CHECK: not_zero: |
| ; CHECK-NEXT: call void @dummy(i32* nonnull [[A]], i32 [[B]]) |
| ; CHECK-NEXT: ret void |
| ; CHECK: dead: |
| ; CHECK-NEXT: unreachable |
| ; |
| entry: |
| %cond1 = icmp eq i32* %a, null |
| br i1 %cond1, label %dead, label %not_null |
| not_null: |
| %cond2 = icmp eq i32 %b, 0 |
| br i1 %cond2, label %dead, label %not_zero |
| not_zero: |
| call void @dummy(i32* %a, i32 %b) |
| ret void |
| dead: |
| unreachable |
| } |
| |
| ; The nonnull attribute in the 'bar' declaration is |
| ; propagated to the parameters of the 'baz' callsite. |
| |
| declare void @bar(i8*, i8* nonnull noundef) |
| declare void @bar_without_noundef(i8*, i8* nonnull) |
| declare void @baz(i8*, i8*) |
| |
| define void @deduce_nonnull_from_another_call(i8* %a, i8* %b) { |
| ; CHECK-LABEL: @deduce_nonnull_from_another_call( |
| ; CHECK-NEXT: call void @bar(i8* [[A:%.*]], i8* [[B:%.*]]) |
| ; CHECK-NEXT: call void @baz(i8* nonnull [[B]], i8* nonnull [[B]]) |
| ; CHECK-NEXT: ret void |
| ; |
| call void @bar(i8* %a, i8* %b) |
| call void @baz(i8* %b, i8* %b) |
| ret void |
| } |
| |
| |
| define void @deduce_nonnull_from_another_call2(i8* %a, i8* %b) { |
| ; CHECK-LABEL: @deduce_nonnull_from_another_call2( |
| ; CHECK-NEXT: call void @bar_without_noundef(i8* [[A:%.*]], i8* [[B:%.*]]) |
| ; CHECK-NEXT: call void @baz(i8* [[B]], i8* [[B]]) |
| ; CHECK-NEXT: ret void |
| ; |
| call void @bar_without_noundef(i8* %a, i8* %b) |
| call void @baz(i8* %b, i8* %b) |
| ret void |
| } |
| |