; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature ; RUN: opt -passes='require,require,assume-simplify,verify' --enable-knowledge-retention -S %s | FileCheck %s target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" declare void @may_throw() declare void @llvm.assume(i1 noundef) #0 define i32 @test1(ptr %arg, ptr %arg1, i32 %arg2, i32 %arg3) { ; CHECK-LABEL: define {{[^@]+}}@test1 ; CHECK-SAME: (ptr nonnull dereferenceable(4) [[ARG:%.*]], ptr [[ARG1:%.*]], i32 [[ARG2:%.*]], i32 [[ARG3:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: [[I:%.*]] = icmp ne i32 [[ARG2]], 4 ; CHECK-NEXT: br i1 [[I]], label [[BB4:%.*]], label [[A:%.*]] ; CHECK: bb4: ; CHECK-NEXT: [[I5:%.*]] = add nsw i32 [[ARG3]], [[ARG2]] ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr [[ARG]], i64 4), "align"(ptr [[ARG1]], i64 4), "nonnull"(ptr [[ARG1]]) ] ; CHECK-NEXT: [[I6:%.*]] = load i32, ptr [[ARG]], align 4 ; CHECK-NEXT: [[I7:%.*]] = add nsw i32 [[I5]], [[I6]] ; CHECK-NEXT: store i32 0, ptr [[ARG]], align 4 ; CHECK-NEXT: [[I8:%.*]] = load i32, ptr [[ARG1]], align 4 ; CHECK-NEXT: [[I9:%.*]] = add nsw i32 [[I7]], [[I8]] ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[ARG1]], i64 4), "ignore"(ptr undef) ] ; CHECK-NEXT: store i32 [[I9]], ptr [[ARG1]], align 4 ; CHECK-NEXT: br label [[B:%.*]] ; CHECK: A: ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr [[ARG]], i64 4), "ignore"(ptr undef, i64 4), "ignore"(ptr undef) ] ; CHECK-NEXT: br label [[B]] ; CHECK: B: ; CHECK-NEXT: ret i32 0 ; bb: %i = icmp ne i32 %arg2, 4 call void @llvm.assume(i1 true) [ "dereferenceable"(ptr %arg, i64 4), "nonnull"(ptr %arg) ] br i1 %i, label %bb4, label %A bb4: ; preds = %bb %i5 = add nsw i32 %arg3, %arg2 call void @may_throw() %i6 = load i32, ptr %arg, align 4 %i7 = add nsw i32 %i5, %i6 store i32 0, ptr %arg, align 4 call void @llvm.assume(i1 true) [ "align"(ptr %arg, i64 4), "dereferenceable"(ptr %arg, i64 4) ] %i8 = load i32, ptr %arg1, align 4 %i9 = add nsw i32 %i7, %i8 call void @llvm.assume(i1 true) [ "align"(ptr %arg1, i64 4), "nonnull"(ptr %arg1) ] call void @may_throw() call void @llvm.assume(i1 true) [ "dereferenceable"(ptr %arg1, i64 4), "nonnull"(ptr %arg1) ] store i32 %i9, ptr %arg1, align 4 br label %B A: ; preds = %bb call void @llvm.assume(i1 true) [ "align"(ptr %arg, i64 4), "dereferenceable"(ptr %arg, i64 4), "nonnull"(ptr %arg) ] br label %B B: ; preds = %A, %bb4 ret i32 0 } define i32 @test2(ptr %arg, ptr %arg1, i32 %arg2, i32 %arg3) { ; CHECK-LABEL: define {{[^@]+}}@test2 ; CHECK-SAME: (ptr [[ARG:%.*]], ptr nonnull align 4 dereferenceable(4) [[ARG1:%.*]], i32 [[ARG2:%.*]], i32 [[ARG3:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: [[I4:%.*]] = load i32, ptr [[ARG1]], align 4 ; CHECK-NEXT: [[I5:%.*]] = icmp ne i32 [[I4]], 0 ; CHECK-NEXT: br i1 [[I5]], label [[BB7:%.*]], label [[BB17:%.*]] ; CHECK: bb7: ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: [[I8:%.*]] = load i32, ptr [[ARG1]], align 4 ; CHECK-NEXT: [[I9:%.*]] = getelementptr inbounds i32, ptr [[ARG1]], i64 2 ; CHECK-NEXT: store i32 [[I8]], ptr [[I9]], align 4 ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: [[I10:%.*]] = getelementptr inbounds ptr, ptr [[ARG]], i64 1 ; CHECK-NEXT: [[I11:%.*]] = load ptr, ptr [[I10]], align 8 ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[ARG1]], i64 12), "align"(ptr [[I11]], i64 4), "dereferenceable"(ptr [[I11]], i64 4), "nonnull"(ptr [[I11]]) ] ; CHECK-NEXT: [[I13:%.*]] = load i32, ptr [[I11]], align 4 ; CHECK-NEXT: [[I14:%.*]] = getelementptr inbounds ptr, ptr [[ARG]], i64 1 ; CHECK-NEXT: [[I15:%.*]] = load ptr, ptr [[I14]], align 8 ; CHECK-NEXT: [[I16:%.*]] = getelementptr inbounds i32, ptr [[I15]], i64 2 ; CHECK-NEXT: store i32 [[I13]], ptr [[I16]], align 4 ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr [[ARG]], i64 4), "dereferenceable"(ptr [[ARG]], i64 4), "nonnull"(ptr [[ARG]]) ] ; CHECK-NEXT: br label [[BB33:%.*]] ; CHECK: bb17: ; CHECK-NEXT: [[I18:%.*]] = getelementptr inbounds ptr, ptr [[ARG]], i64 7 ; CHECK-NEXT: [[I19:%.*]] = load ptr, ptr [[I18]], align 8 ; CHECK-NEXT: [[I21:%.*]] = load i32, ptr [[I19]], align 4 ; CHECK-NEXT: [[I22:%.*]] = icmp ne i32 [[I21]], 0 ; CHECK-NEXT: br i1 [[I22]], label [[BB23:%.*]], label [[BB31:%.*]] ; CHECK: bb23: ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr [[ARG]], i64 4), "dereferenceable"(ptr [[ARG]], i64 4), "nonnull"(ptr [[ARG]]) ] ; CHECK-NEXT: [[I24:%.*]] = getelementptr inbounds ptr, ptr [[ARG]], i64 2 ; CHECK-NEXT: [[I25:%.*]] = load ptr, ptr [[I24]], align 8 ; CHECK-NEXT: [[I27:%.*]] = load i32, ptr [[I25]], align 4 ; CHECK-NEXT: [[I28:%.*]] = getelementptr inbounds ptr, ptr [[ARG]], i64 2 ; CHECK-NEXT: [[I29:%.*]] = load ptr, ptr [[I28]], align 8 ; CHECK-NEXT: [[I30:%.*]] = getelementptr inbounds i32, ptr [[I29]], i64 2 ; CHECK-NEXT: store i32 [[I27]], ptr [[I30]], align 4 ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: br label [[BB31]] ; CHECK: bb31: ; CHECK-NEXT: br label [[BB32:%.*]] ; CHECK: bb32: ; CHECK-NEXT: br label [[BB33]] ; CHECK: bb33: ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr [[ARG]], i64 4), "dereferenceable"(ptr [[ARG]], i64 4), "nonnull"(ptr [[ARG]]) ] ; CHECK-NEXT: ret i32 0 ; bb: %i4 = load i32, ptr %arg1, align 4 %i5 = icmp ne i32 %i4, 0 call void @llvm.assume(i1 true) [ "align"(ptr %arg1, i64 4), "dereferenceable"(ptr %arg1, i64 4) ] call void @llvm.assume(i1 true) [ "align"(ptr %arg1, i64 4), "nonnull"(ptr %arg1) ] br i1 %i5, label %bb7, label %bb17 bb7: ; preds = %bb call void @may_throw() call void @llvm.assume(i1 true) [ "align"(ptr %arg1, i64 4), "dereferenceable"(ptr %arg1, i64 4), "nonnull"(ptr %arg1) ] %i8 = load i32, ptr %arg1, align 4 %i9 = getelementptr inbounds i32, ptr %arg1, i64 2 store i32 %i8, ptr %i9, align 4 call void @may_throw() call void @may_throw() call void @llvm.assume(i1 true) [ "align"(ptr %i9, i64 4), "dereferenceable"(ptr %i9, i64 4), "nonnull"(ptr %i9) ] %i10 = getelementptr inbounds ptr, ptr %arg, i64 1 %i11 = load ptr, ptr %i10, align 8 %i13 = load i32, ptr %i11, align 4 call void @llvm.assume(i1 true) [ "align"(ptr %i11, i64 4), "dereferenceable"(ptr %i11, i64 4), "nonnull"(ptr %i11) ] %i14 = getelementptr inbounds ptr, ptr %arg, i64 1 %i15 = load ptr, ptr %i14, align 8 %i16 = getelementptr inbounds i32, ptr %i15, i64 2 store i32 %i13, ptr %i16, align 4 call void @may_throw() call void @llvm.assume(i1 true) [ "align"(ptr %arg, i64 4), "dereferenceable"(ptr %arg, i64 4), "nonnull"(ptr %arg) ] br label %bb33 bb17: ; preds = %bb %i18 = getelementptr inbounds ptr, ptr %arg, i64 7 %i19 = load ptr, ptr %i18, align 8 %i21 = load i32, ptr %i19, align 4 %i22 = icmp ne i32 %i21, 0 br i1 %i22, label %bb23, label %bb31 bb23: ; preds = %bb17 call void @may_throw() call void @llvm.assume(i1 true) [ "align"(ptr %arg, i64 4), "dereferenceable"(ptr %arg, i64 4), "nonnull"(ptr %arg) ] %i24 = getelementptr inbounds ptr, ptr %arg, i64 2 %i25 = load ptr, ptr %i24, align 8 %i27 = load i32, ptr %i25, align 4 %i28 = getelementptr inbounds ptr, ptr %arg, i64 2 %i29 = load ptr, ptr %i28, align 8 %i30 = getelementptr inbounds i32, ptr %i29, i64 2 store i32 %i27, ptr %i30, align 4 call void @may_throw() br label %bb31 bb31: ; preds = %bb23, %bb17 br label %bb32 bb32: ; preds = %bb31 br label %bb33 bb33: ; preds = %bb32, %bb7 call void @llvm.assume(i1 true) [ "align"(ptr %arg, i64 4), "dereferenceable"(ptr %arg, i64 4), "nonnull"(ptr %arg) ] ret i32 0 } define i32 @test3(ptr nonnull %p, i32 %i) { ; CHECK-LABEL: define {{[^@]+}}@test3 ; CHECK-SAME: (ptr nonnull [[P:%.*]], i32 [[I:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], 0 ; CHECK-NEXT: br i1 [[COND]], label [[A:%.*]], label [[B:%.*]] ; CHECK: A: ; CHECK-NEXT: ret i32 0 ; CHECK: B: ; CHECK-NEXT: [[RET:%.*]] = load i32, ptr [[P]], align 4 ; CHECK-NEXT: ret i32 [[RET]] ; bb: %cond = icmp ne i32 %i, 0 call void @llvm.assume(i1 true) [ "nonnull"(ptr %p) ] br i1 %cond, label %A, label %B A: ; preds = %bb ret i32 0 B: ; preds = %bb %ret = load i32, ptr %p, align 4 ret i32 %ret } define i32 @test4(ptr %p, i32 %i) { ; CHECK-LABEL: define {{[^@]+}}@test4 ; CHECK-SAME: (ptr nonnull dereferenceable(32) [[P:%.*]], i32 [[I:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], 0 ; CHECK-NEXT: br i1 [[COND]], label [[A:%.*]], label [[B:%.*]] ; CHECK: A: ; CHECK-NEXT: ret i32 0 ; CHECK: B: ; CHECK-NEXT: [[RET:%.*]] = load i32, ptr [[P]], align 4 ; CHECK-NEXT: ret i32 [[RET]] ; bb: %cond = icmp ne i32 %i, 0 call void @llvm.assume(i1 true) [ "nonnull"(ptr %p), "dereferenceable"(ptr %p, i32 32) ] br i1 %cond, label %A, label %B A: ; preds = %bb ret i32 0 B: ; preds = %bb %ret = load i32, ptr %p, align 4 ret i32 %ret } define i32 @test4A(ptr %p, i32 %i) { ; CHECK-LABEL: define {{[^@]+}}@test4A ; CHECK-SAME: (ptr [[P:%.*]], i32 [[I:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], 0 ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[P]]), "dereferenceable"(ptr [[P]], i32 32) ] ; CHECK-NEXT: br i1 [[COND]], label [[A:%.*]], label [[B:%.*]] ; CHECK: A: ; CHECK-NEXT: ret i32 0 ; CHECK: B: ; CHECK-NEXT: [[RET:%.*]] = load i32, ptr [[P]], align 4 ; CHECK-NEXT: ret i32 [[RET]] ; bb: call void @may_throw() %cond = icmp ne i32 %i, 0 call void @llvm.assume(i1 true) [ "nonnull"(ptr %p), "dereferenceable"(ptr %p, i32 32) ] br i1 %cond, label %A, label %B A: ; preds = %bb ret i32 0 B: ; preds = %bb %ret = load i32, ptr %p, align 4 ret i32 %ret } define i32 @test5(ptr dereferenceable(64) %p, i32 %i) { ; CHECK-LABEL: define {{[^@]+}}@test5 ; CHECK-SAME: (ptr nonnull dereferenceable(64) [[P:%.*]], i32 [[I:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], 0 ; CHECK-NEXT: br i1 [[COND]], label [[A:%.*]], label [[B:%.*]] ; CHECK: A: ; CHECK-NEXT: ret i32 0 ; CHECK: B: ; CHECK-NEXT: [[RET:%.*]] = load i32, ptr [[P]], align 4 ; CHECK-NEXT: ret i32 [[RET]] ; bb: %cond = icmp ne i32 %i, 0 call void @llvm.assume(i1 true) [ "nonnull"(ptr %p), "dereferenceable"(ptr %p, i32 32) ] br i1 %cond, label %A, label %B A: ; preds = %bb ret i32 0 B: ; preds = %bb %ret = load i32, ptr %p, align 4 ret i32 %ret } define i32 @test5A(ptr dereferenceable(8) %p, i32 %i) { ; CHECK-LABEL: define {{[^@]+}}@test5A ; CHECK-SAME: (ptr dereferenceable(32) [[P:%.*]], i32 [[I:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], 0 ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "cold"(), "ignore"(ptr undef, i32 32) ] ; CHECK-NEXT: br i1 [[COND]], label [[A:%.*]], label [[B:%.*]] ; CHECK: A: ; CHECK-NEXT: ret i32 0 ; CHECK: B: ; CHECK-NEXT: [[RET:%.*]] = load i32, ptr [[P]], align 4 ; CHECK-NEXT: ret i32 [[RET]] ; bb: %cond = icmp ne i32 %i, 0 call void @llvm.assume(i1 true) [ "cold"(), "dereferenceable"(ptr %p, i32 32) ] br i1 %cond, label %A, label %B A: ; preds = %bb ret i32 0 B: ; preds = %bb %ret = load i32, ptr %p, align 4 ret i32 %ret } define i32 @test6() { ; CHECK-LABEL: define {{[^@]+}}@test6() { ; CHECK-NEXT: bb: ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "cold"() ] ; CHECK-NEXT: call void @may_throw() ; CHECK-NEXT: ret i32 0 ; bb: call void @llvm.assume(i1 true) [ "cold"() ] call void @llvm.assume(i1 true) [ "cold"() ] call void @may_throw() call void @llvm.assume(i1 true) [ "cold"() ] ret i32 0 } define i32 @test7(ptr %p) { ; CHECK-LABEL: define {{[^@]+}}@test7 ; CHECK-SAME: (ptr nonnull align 4 dereferenceable(4) [[P:%.*]]) { ; CHECK-NEXT: bb: ; CHECK-NEXT: call void @llvm.assume(i1 true) [ "cold"() ] ; CHECK-NEXT: ret i32 0 ; bb: call void @llvm.assume(i1 true) [ "cold"() ] call void @llvm.assume(i1 true) [ "align"(ptr %p, i32 4) ] call void @llvm.assume(i1 true) [ "dereferenceable"(ptr %p, i32 4) ] call void @llvm.assume(i1 true) [ "align"(ptr %p, i32 4), "nonnull"(ptr %p) ] ret i32 0 } attributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite) }