[test] Precommit test for D153815

llvm/test/Transforms/InstCombine/inbounds-gep.ll

@@ -0,0 +1,92 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
+; RUN: opt -passes=instcombine -S < %s | FileCheck %s
+
+declare ptr @g()
+declare ptr @use(ptr)
+
+define void @call1() {
+; CHECK-LABEL: define void @call1() {
+; CHECK-NEXT:    [[A:%.*]] = call ptr @g()
+; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr [[B]])
+; CHECK-NEXT:    ret void
+;
+  %a = call ptr @g()
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}
+define void @call2() {
+; CHECK-LABEL: define void @call2() {
+; CHECK-NEXT:    [[A:%.*]] = call dereferenceable(8) ptr @g()
+; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr [[B]])
+; CHECK-NEXT:    ret void
+;
+  %a = call dereferenceable(8) ptr @g()
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}
+
+define void @call3() {
+; CHECK-LABEL: define void @call3() {
+; CHECK-NEXT:    [[A:%.*]] = call dereferenceable_or_null(8) ptr @g()
+; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr [[B]])
+; CHECK-NEXT:    ret void
+;
+  %a = call dereferenceable_or_null(8) ptr @g()
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}
+
+define void @alloca() {
+; CHECK-LABEL: define void @alloca() {
+; CHECK-NEXT:    [[A:%.*]] = alloca i64, align 8
+; CHECK-NEXT:    [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr nonnull [[B]])
+; CHECK-NEXT:    ret void
+;
+  %a = alloca i64
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}
+
+define void @arg1(ptr %a) {
+; CHECK-LABEL: define void @arg1
+; CHECK-SAME: (ptr [[A:%.*]]) {
+; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr [[B]])
+; CHECK-NEXT:    ret void
+;
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}
+
+define void @arg2(ptr dereferenceable(8) %a) {
+; CHECK-LABEL: define void @arg2
+; CHECK-SAME: (ptr dereferenceable(8) [[A:%.*]]) {
+; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr [[B]])
+; CHECK-NEXT:    ret void
+;
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}
+
+define void @arg3(ptr dereferenceable_or_null(8) %a) {
+; CHECK-LABEL: define void @arg3
+; CHECK-SAME: (ptr dereferenceable_or_null(8) [[A:%.*]]) {
+; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, ptr [[A]], i64 4
+; CHECK-NEXT:    call void @use(ptr [[B]])
+; CHECK-NEXT:    ret void
+;
+  %b = getelementptr i8, ptr %a, i64 4
+  call void @use(ptr %b)
+  ret void
+}