[GVN][NFC] Add pre-commit test

Author: skachkov-sc

llvm/test/Transforms/GVN/rle-clobbering-store.ll

@@ -0,0 +1,132 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
+; RUN: opt < %s -passes=gvn -S | FileCheck %s
+
+define i1 @test_i1(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i1 @test_i1(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i1, ptr [[A]], align 1
+; CHECK-NEXT:    store i1 [[TMP0]], ptr [[B]], align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load i1, ptr [[A]], align 1
+; CHECK-NEXT:    ret i1 [[TMP1]]
+;
+entry:
+  %0 = load i1, ptr %a, align 1
+  store i1 %0, ptr %b, align 1
+  %1 = load i1, ptr %a, align 1
+  ret i1 %1
+}
+
+define i8 @test_i8(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i8 @test_i8(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i8, ptr [[A]], align 1
+; CHECK-NEXT:    store i8 [[TMP0]], ptr [[B]], align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load i8, ptr [[A]], align 1
+; CHECK-NEXT:    ret i8 [[TMP1]]
+;
+entry:
+  %0 = load i8, ptr %a, align 1
+  store i8 %0, ptr %b, align 1
+  %1 = load i8, ptr %a, align 1
+  ret i8 %1
+}
+
+define i32 @test_i32(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i32 @test_i32(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    store i32 [[TMP0]], ptr [[B]], align 4
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
+entry:
+  %0 = load i32, ptr %a, align 4
+  store i32 %0, ptr %b, align 4
+  %1 = load i32, ptr %a, align 4
+  ret i32 %1
+}
+
+define float @test_float(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define float @test_float(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load float, ptr [[A]], align 4
+; CHECK-NEXT:    store float [[TMP0]], ptr [[B]], align 4
+; CHECK-NEXT:    [[TMP1:%.*]] = load float, ptr [[A]], align 4
+; CHECK-NEXT:    ret float [[TMP1]]
+;
+entry:
+  %0 = load float, ptr %a, align 4
+  store float %0, ptr %b, align 4
+  %1 = load float, ptr %a, align 4
+  ret float %1
+}
+
+define i32 @test_unaligned_store(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i32 @test_unaligned_store(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    store i32 [[TMP0]], ptr [[B]], align 2
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
+entry:
+  %0 = load i32, ptr %a, align 4
+  store i32 %0, ptr %b, align 2
+  %1 = load i32, ptr %a, align 4
+  ret i32 %1
+}
+
+define i32 @test_unaligned_loads(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i32 @test_unaligned_loads(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[A]], align 2
+; CHECK-NEXT:    store i32 [[TMP0]], ptr [[B]], align 4
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[A]], align 2
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
+entry:
+  %0 = load i32, ptr %a, align 2
+  store i32 %0, ptr %b, align 4
+  %1 = load i32, ptr %a, align 2
+  ret i32 %1
+}
+
+define i8 @test_modify_between(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i8 @test_modify_between(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i8, ptr [[A]], align 1
+; CHECK-NEXT:    store i8 42, ptr [[C]], align 1
+; CHECK-NEXT:    store i8 [[TMP0]], ptr [[B]], align 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load i8, ptr [[A]], align 1
+; CHECK-NEXT:    ret i8 [[TMP1]]
+;
+entry:
+  %0 = load i8, ptr %a, align 1
+  store i8 42, ptr %c, align 1
+  store i8 %0, ptr %b, align 1
+  %1 = load i8, ptr %a, align 1
+  ret i8 %1
+}
+
+define i32 @test_unordered(ptr %a, ptr %b, ptr %c) {
+; CHECK-LABEL: define i32 @test_unordered(
+; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[A]], align 4
+; CHECK-NEXT:    store i32 [[TMP0]], ptr [[B]], align 4
+; CHECK-NEXT:    [[TMP1:%.*]] = load atomic i32, ptr [[A]] unordered, align 4
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
+entry:
+  %0 = load i32, ptr %a, align 4
+  store i32 %0, ptr %b, align 4
+  %1 = load atomic i32, ptr %a unordered, align 4
+  ret i32 %1
+}