diff --git a/llvm/test/Transforms/EarlyCSE/materialize-align-assumptions.ll b/llvm/test/Transforms/EarlyCSE/materialize-align-assumptions.ll new file mode 100644 index 000000000000000..ea63376957162b1 --- /dev/null +++ b/llvm/test/Transforms/EarlyCSE/materialize-align-assumptions.ll @@ -0,0 +1,100 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 +; RUN: opt -passes='early-cse' -S %s | FileCheck %s + +declare void @foo(ptr) + +define ptr @align_replacement_does_not_have_align_metadata(ptr noalias %p) { +; CHECK-LABEL: define ptr @align_replacement_does_not_have_align_metadata( +; CHECK-SAME: ptr noalias [[P:%.*]]) { +; CHECK-NEXT: [[L_1:%.*]] = load ptr, ptr [[P]], align 8 +; CHECK-NEXT: call void @foo(ptr [[L_1]]) +; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[L_1]], i64 4 +; CHECK-NEXT: store ptr [[GEP]], ptr [[P]], align 8 +; CHECK-NEXT: ret ptr [[GEP]] +; + %l.1 = load ptr, ptr %p, align 8 + call void @foo(ptr %l.1) + %l.2 = load ptr, ptr %p, align 8 + %gep = getelementptr i8, ptr %l.2, i64 4 + store ptr %gep, ptr %p, align 8 + %l.3 = load ptr, ptr %p, align 8, !align !0 + ret ptr %l.3 +} + +define ptr @align_replacement_does_not_have_align_metadata2(ptr noalias %p) { +; CHECK-LABEL: define ptr @align_replacement_does_not_have_align_metadata2( +; CHECK-SAME: ptr noalias [[P:%.*]]) { +; CHECK-NEXT: [[L_1:%.*]] = load ptr, ptr [[P]], align 8 +; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[L_1]], i64 4 +; CHECK-NEXT: store ptr [[GEP]], ptr [[P]], align 8 +; CHECK-NEXT: ret ptr [[GEP]] +; + %l.1 = load ptr, ptr %p, align 8 + %gep = getelementptr i8, ptr %l.1, i64 4 + store ptr %gep, ptr %p, align 8 + %l.2 = load ptr, ptr %p, align 8, !align !0 + ret ptr %l.2 +} + +define ptr @align_replacement_has_same_alignment(ptr noalias %p) { +; CHECK-LABEL: define ptr @align_replacement_has_same_alignment( +; CHECK-SAME: ptr noalias [[P:%.*]]) { +; CHECK-NEXT: [[L_1:%.*]] = load ptr, ptr [[P]], align 8, !align [[META0:![0-9]+]] +; CHECK-NEXT: call void @foo(ptr [[L_1]]) +; CHECK-NEXT: ret ptr [[L_1]] +; + %l.1 = load ptr, ptr %p, align 8, !align !0 + call void @foo(ptr %l.1) + %l.2 = load ptr, ptr %p, align 8, !align !0 + ret ptr %l.2 +} + +define ptr @align_replacement_has_smaller_alignment(ptr noalias %p) { +; CHECK-LABEL: define ptr @align_replacement_has_smaller_alignment( +; CHECK-SAME: ptr noalias [[P:%.*]]) { +; CHECK-NEXT: [[L_1:%.*]] = load ptr, ptr [[P]], align 8, !align [[META0]] +; CHECK-NEXT: call void @foo(ptr [[L_1]]) +; CHECK-NEXT: ret ptr [[L_1]] +; + %l.1 = load ptr, ptr %p, align 8, !align !0 + call void @foo(ptr %l.1) + %l.2 = load ptr, ptr %p, align 8, !align !1 + ret ptr %l.2 +} + +define ptr @align_replacement_has_larger_alignment(ptr %p) { +; CHECK-LABEL: define ptr @align_replacement_has_larger_alignment( +; CHECK-SAME: ptr [[P:%.*]]) { +; CHECK-NEXT: [[L_1:%.*]] = load ptr, ptr [[P]], align 8, !align [[META1:![0-9]+]] +; CHECK-NEXT: call void @foo(ptr [[L_1]]) +; CHECK-NEXT: [[L_2:%.*]] = load ptr, ptr [[P]], align 8, !align [[META0]] +; CHECK-NEXT: ret ptr [[L_2]] +; + %l.1 = load ptr, ptr %p, align 8, !align !1 + call void @foo(ptr %l.1) + %l.2 = load ptr, ptr %p, align 8, !align !0 + ret ptr %l.2 +} + +define ptr @align_1(ptr %p) { +; CHECK-LABEL: define ptr @align_1( +; CHECK-SAME: ptr [[P:%.*]]) { +; CHECK-NEXT: [[L_1:%.*]] = load ptr, ptr [[P]], align 8 +; CHECK-NEXT: call void @foo(ptr [[L_1]]) +; CHECK-NEXT: [[L_2:%.*]] = load ptr, ptr [[P]], align 8, !align [[META2:![0-9]+]] +; CHECK-NEXT: ret ptr [[L_2]] +; + %l.1 = load ptr, ptr %p, align 8 + call void @foo(ptr %l.1) + %l.2 = load ptr, ptr %p, align 8, !align !2 + ret ptr %l.2 +} + +!0 = !{i64 4} +!1 = !{i64 8} +!2 = !{i64 1} +;. +; CHECK: [[META0]] = !{i64 4} +; CHECK: [[META1]] = !{i64 8} +; CHECK: [[META2]] = !{i64 1} +;.