[EarlyCSE] Add tests for de-duplication of callsites with differing attrs; NFC

1 files changed, 263 insertions, 0 deletions

diff --git a/llvm/test/Transforms/EarlyCSE/replace-calls-def-attrs.ll b/llvm/test/Transforms/EarlyCSE/replace-calls-def-attrs.ll
new file mode 100644
index 0000000..1956008
--- /dev/null
+++ b/llvm/test/Transforms/EarlyCSE/replace-calls-def-attrs.ll
@@ -0,0 +1,263 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes --check-globals all --version 5
+; RUN: opt -S -passes=early-cse  < %s | FileCheck %s
+
+declare i8 @baz(i8, i8)
+declare i8 @baz_side_effects(i8, i8)
+declare i8 @buz(i8, i8)
+
+declare ptr @baz.ptr(i8, i8)
+declare i8 @buz.ptr(ptr, ptr)
+
+declare float @baz.fp(float, float)
+declare i8 @buz.fp(float, float)
+define i8 @same_parent_combine_diff_attrs(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C2:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR0:[0-9]+]]
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C1]], i8 [[C2]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call i8 @baz(i8 noundef %x, i8 noundef %y) readnone
+  %c0 = call i8 @baz(i8 %x, i8 noundef %y) readnone
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_needs_intersect(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_needs_intersect(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call nonnull ptr @baz.ptr(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[C0:%.*]] = call ptr @baz.ptr(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz.ptr(ptr [[C0]], ptr [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call nonnull ptr @baz.ptr(i8 noundef %x, i8 noundef %y) readnone
+  %c0 = call ptr @baz.ptr(i8 %x, i8 noundef %y) readnone
+  %r = call i8 @buz.ptr(ptr %c0, ptr %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_fmf(float %x, float %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_fmf(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call nnan nsz float @baz.fp(float noundef [[X]], float noundef [[Y]]) #[[ATTR1:[0-9]+]]
+; CHECK-NEXT:    [[C0:%.*]] = call nnan float @baz.fp(float [[X]], float noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz.fp(float [[C0]], float [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call nnan nsz float @baz.fp(float noundef %x, float noundef %y) readonly
+  %c0 = call nnan float @baz.fp(float %x, float noundef %y) readonly
+  %r = call i8 @buz.fp(float %c0, float %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_fmf2(float %x, float %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_fmf2(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call nnan float @baz.fp(float noundef [[X]], float noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[C0:%.*]] = call nnan nsz float @baz.fp(float [[X]], float noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz.fp(float [[C0]], float [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call nnan float @baz.fp(float noundef %x, float noundef %y) readnone
+  %c0 = call nnan nsz float @baz.fp(float %x, float noundef %y) readnone
+  %r = call i8 @buz.fp(float %c0, float %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_needs_intersect2(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_needs_intersect2(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call nonnull ptr @baz.ptr(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[C0:%.*]] = call ptr @baz.ptr(i8 [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz.ptr(ptr [[C0]], ptr [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call nonnull ptr @baz.ptr(i8 noundef %x, i8 noundef %y) readonly
+  %c0 = call ptr @baz.ptr(i8 %x, i8 noundef %y) readonly
+  %r = call i8 @buz.ptr(ptr %c0, ptr %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_really_needs_intersect(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_really_needs_intersect(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call nonnull ptr @baz.ptr(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[C0:%.*]] = call ptr @baz.ptr(i8 [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz.ptr(ptr [[C0]], ptr noundef [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call nonnull ptr @baz.ptr(i8 noundef %x, i8 noundef %y) readonly
+  %c0 = call ptr @baz.ptr(i8 %x, i8 noundef %y) readonly
+  %r = call i8 @buz.ptr(ptr %c0, ptr noundef %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_fail_side_effects(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_fail_side_effects(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]])
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]])
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call i8 @baz(i8 noundef %x, i8 noundef %y)
+  %c0 = call i8 @baz(i8 %x, i8 noundef %y)
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_quasi_side_effects2(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_quasi_side_effects2(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]])
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call i8 @baz(i8 noundef %x, i8 noundef %y) readnone
+  %c0 = call i8 @baz(i8 %x, i8 noundef %y)
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+
+}
+
+define i8 @diff_parent_combine_diff_attrs(i1 %c, i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @diff_parent_combine_diff_attrs(
+; CHECK-SAME: i1 [[C:%.*]], i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    br i1 [[C]], label %[[T:.*]], label %[[F:.*]]
+; CHECK:       [[T]]:
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+; CHECK:       [[F]]:
+; CHECK-NEXT:    [[R2:%.*]] = add i8 [[C1]], 4
+; CHECK-NEXT:    ret i8 [[R2]]
+;
+  %c1 = call i8 @baz(i8 %x, i8 noundef %y) readnone
+  br i1 %c, label %T, label %F
+T:
+  %c0 = call i8 @baz(i8 noundef %x, i8 noundef %y) readonly
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+F:
+  %r2 = add i8 %c1, 4
+  ret i8 %r2
+}
+
+define i8 @diff_parent_combine_diff_attrs_preserves_return_attrs(i1 %c, i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @diff_parent_combine_diff_attrs_preserves_return_attrs(
+; CHECK-SAME: i1 [[C:%.*]], i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call nonnull ptr @baz.ptr(i8 [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    br i1 [[C]], label %[[T:.*]], label %[[F:.*]]
+; CHECK:       [[T]]:
+; CHECK-NEXT:    [[C0:%.*]] = call nonnull ptr @baz.ptr(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR1]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz.ptr(ptr [[C0]], ptr noundef [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+; CHECK:       [[F]]:
+; CHECK-NEXT:    ret i8 9
+;
+  %c1 = call nonnull ptr @baz.ptr(i8 %x, i8 noundef %y) readonly
+  br i1 %c, label %T, label %F
+T:
+  %c0 = call nonnull ptr @baz.ptr(i8 noundef %x, i8 noundef %y) readonly
+  %r = call i8 @buz.ptr(ptr %c0, ptr noundef %c1)
+  ret i8 %r
+F:
+  ret i8 9
+}
+
+define i8 @same_parent_combine_diff_attrs_todo(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_todo(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR2:[0-9]+]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call i8 @baz(i8 %x, i8 noundef %y) readnone
+  %c0 = call i8 @baz(i8 noundef %x, i8 noundef %y) readnone alwaysinline
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+
+}
+
+define i8 @same_parent_combine_diff_attrs_fail(i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @same_parent_combine_diff_attrs_fail(
+; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR3:[0-9]+]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %c1 = call i8 @baz(i8 %x, i8 noundef %y) readnone
+  %c0 = call i8 @baz(i8 noundef %x, i8 noundef %y) readnone strictfp
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+
+}
+
+define i8 @diff_parent_combine_diff_attrs_todo(i1 %c, i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @diff_parent_combine_diff_attrs_todo(
+; CHECK-SAME: i1 [[C:%.*]], i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    br i1 [[C]], label %[[T:.*]], label %[[F:.*]]
+; CHECK:       [[T]]:
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR4:[0-9]+]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+; CHECK:       [[F]]:
+; CHECK-NEXT:    [[R2:%.*]] = add i8 [[C1]], 4
+; CHECK-NEXT:    ret i8 [[R2]]
+;
+  %c1 = call i8 @baz(i8 %x, i8 noundef %y) readnone
+  br i1 %c, label %T, label %F
+T:
+  %c0 = call i8 @baz(i8 noundef %x, i8 noundef %y) readnone optnone noinline
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+F:
+  %r2 = add i8 %c1, 4
+  ret i8 %r2
+}
+
+define i8 @diff_parent_combine_diff_attrs_fail(i1 %c, i8 %x, i8 %y) {
+; CHECK-LABEL: define i8 @diff_parent_combine_diff_attrs_fail(
+; CHECK-SAME: i1 [[C:%.*]], i8 [[X:%.*]], i8 [[Y:%.*]]) {
+; CHECK-NEXT:    [[C1:%.*]] = call i8 @baz(i8 [[X]], i8 noundef [[Y]]) #[[ATTR0]]
+; CHECK-NEXT:    br i1 [[C]], label %[[T:.*]], label %[[F:.*]]
+; CHECK:       [[T]]:
+; CHECK-NEXT:    [[C0:%.*]] = call i8 @baz(i8 noundef [[X]], i8 noundef [[Y]]) #[[ATTR3]]
+; CHECK-NEXT:    [[R:%.*]] = call i8 @buz(i8 [[C0]], i8 [[C1]])
+; CHECK-NEXT:    ret i8 [[R]]
+; CHECK:       [[F]]:
+; CHECK-NEXT:    [[R2:%.*]] = add i8 [[C1]], 4
+; CHECK-NEXT:    ret i8 [[R2]]
+;
+  %c1 = call i8 @baz(i8 %x, i8 noundef %y) readnone
+  br i1 %c, label %T, label %F
+T:
+  %c0 = call i8 @baz(i8 noundef %x, i8 noundef %y) readnone strictfp
+  %r = call i8 @buz(i8 %c0, i8 %c1)
+  ret i8 %r
+F:
+  %r2 = add i8 %c1, 4
+  ret i8 %r2
+}
+
+;.
+; CHECK: attributes #[[ATTR0]] = { memory(none) }
+; CHECK: attributes #[[ATTR1]] = { memory(read) }
+; CHECK: attributes #[[ATTR2]] = { alwaysinline memory(none) }
+; CHECK: attributes #[[ATTR3]] = { strictfp memory(none) }
+; CHECK: attributes #[[ATTR4]] = { noinline optnone memory(none) }
+;.