diff --git a/llvm/test/Transforms/InstCombine/compare-alloca.ll b/llvm/test/Transforms/InstCombine/compare-alloca.ll index ff55176412057f..a9e10724805ae6 100644 --- a/llvm/test/Transforms/InstCombine/compare-alloca.ll +++ b/llvm/test/Transforms/InstCombine/compare-alloca.ll @@ -1,54 +1,72 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -passes=instcombine -S %s | FileCheck %s target datalayout = "p:32:32" define i1 @alloca_argument_compare(i64* %arg) { +; CHECK-LABEL: @alloca_argument_compare( +; CHECK-NEXT: ret i1 false +; %alloc = alloca i64 %cmp = icmp eq i64* %arg, %alloc ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare - ; CHECK: ret i1 false } define i1 @alloca_argument_compare_swapped(i64* %arg) { +; CHECK-LABEL: @alloca_argument_compare_swapped( +; CHECK-NEXT: ret i1 false +; %alloc = alloca i64 %cmp = icmp eq i64* %alloc, %arg ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare_swapped - ; CHECK: ret i1 false } define i1 @alloca_argument_compare_ne(i64* %arg) { +; CHECK-LABEL: @alloca_argument_compare_ne( +; CHECK-NEXT: ret i1 true +; %alloc = alloca i64 %cmp = icmp ne i64* %arg, %alloc ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare_ne - ; CHECK: ret i1 true } define i1 @alloca_argument_compare_derived_ptrs(i64* %arg, i64 %x) { +; CHECK-LABEL: @alloca_argument_compare_derived_ptrs( +; CHECK-NEXT: ret i1 false +; %alloc = alloca i64, i64 8 %p = getelementptr i64, i64* %arg, i64 %x %q = getelementptr i64, i64* %alloc, i64 3 %cmp = icmp eq i64* %p, %q ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare_derived_ptrs - ; CHECK: ret i1 false } declare void @escape(i64*) define i1 @alloca_argument_compare_escaped_alloca(i64* %arg) { +; CHECK-LABEL: @alloca_argument_compare_escaped_alloca( +; CHECK-NEXT: [[ALLOC:%.*]] = alloca i64, align 8 +; CHECK-NEXT: call void @escape(i64* nonnull [[ALLOC]]) +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64* [[ALLOC]], [[ARG:%.*]] +; CHECK-NEXT: ret i1 [[CMP]] +; %alloc = alloca i64 call void @escape(i64* %alloc) %cmp = icmp eq i64* %alloc, %arg ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare_escaped_alloca - ; CHECK: %cmp = icmp eq i64* %alloc, %arg - ; CHECK: ret i1 %cmp } declare void @check_compares(i1, i1) define void @alloca_argument_compare_two_compares(i64* %p) { +; CHECK-LABEL: @alloca_argument_compare_two_compares( +; CHECK-NEXT: [[Q1:%.*]] = alloca [8 x i64], align 8 +; CHECK-NEXT: [[Q1_SUB:%.*]] = getelementptr inbounds [8 x i64], [8 x i64]* [[Q1]], i32 0, i32 0 +; CHECK-NEXT: [[R:%.*]] = getelementptr i64, i64* [[P:%.*]], i32 1 +; CHECK-NEXT: [[S:%.*]] = getelementptr inbounds [8 x i64], [8 x i64]* [[Q1]], i32 0, i32 2 +; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i64* [[Q1_SUB]], [[P]] +; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i64* [[R]], [[S]] +; CHECK-NEXT: call void @check_compares(i1 [[CMP1]], i1 [[CMP2]]) +; CHECK-NEXT: ret void +; %q = alloca i64, i64 8 %r = getelementptr i64, i64* %p, i64 1 %s = getelementptr i64, i64* %q, i64 2 @@ -57,24 +75,29 @@ define void @alloca_argument_compare_two_compares(i64* %p) { call void @check_compares(i1 %cmp1, i1 %cmp2) ret void ; We will only fold if there is a single cmp. - ; CHECK-LABEL: alloca_argument_compare_two_compares - ; CHECK: call void @check_compares(i1 %cmp1, i1 %cmp2) } define i1 @alloca_argument_compare_escaped_through_store(i64* %arg, i64** %ptr) { +; CHECK-LABEL: @alloca_argument_compare_escaped_through_store( +; CHECK-NEXT: [[ALLOC:%.*]] = alloca i64, align 8 +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64* [[ALLOC]], [[ARG:%.*]] +; CHECK-NEXT: [[P:%.*]] = getelementptr inbounds i64, i64* [[ALLOC]], i32 1 +; CHECK-NEXT: store i64* [[P]], i64** [[PTR:%.*]], align 4 +; CHECK-NEXT: ret i1 [[CMP]] +; %alloc = alloca i64 %cmp = icmp eq i64* %alloc, %arg %p = getelementptr i64, i64* %alloc, i64 1 store i64* %p, i64** %ptr ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare_escaped_through_store - ; CHECK: %cmp = icmp eq i64* %alloc, %arg - ; CHECK: ret i1 %cmp } declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) define i1 @alloca_argument_compare_benign_instrs(i8* %arg) { +; CHECK-LABEL: @alloca_argument_compare_benign_instrs( +; CHECK-NEXT: ret i1 false +; %alloc = alloca i8 call void @llvm.lifetime.start.p0i8(i64 1, i8* %alloc) %cmp = icmp eq i8* %arg, %alloc @@ -82,16 +105,16 @@ define i1 @alloca_argument_compare_benign_instrs(i8* %arg) { store i8 %x, i8* %alloc call void @llvm.lifetime.end.p0i8(i64 1, i8* %alloc) ret i1 %cmp - ; CHECK-LABEL: alloca_argument_compare_benign_instrs - ; CHECK: ret i1 false } declare i64* @allocator() define i1 @alloca_call_compare() { +; CHECK-LABEL: @alloca_call_compare( +; CHECK-NEXT: [[Q:%.*]] = call i64* @allocator() +; CHECK-NEXT: ret i1 false +; %p = alloca i64 %q = call i64* @allocator() %cmp = icmp eq i64* %p, %q ret i1 %cmp - ; CHECK-LABEL: alloca_call_compare - ; CHECK: ret i1 false }