| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -correlated-propagation -S | FileCheck %s |
| |
| define void @test1(i8* %ptr) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| %A = load i8, i8* %ptr |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ret void |
| } |
| |
| define void @test1_no_null_opt(i8* %ptr) #0 { |
| ; CHECK-LABEL: @test1_no_null_opt( |
| ; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null |
| ; CHECK-NEXT: ret void |
| ; |
| %A = load i8, i8* %ptr |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ret void |
| } |
| |
| define void @test2(i8* %ptr) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| store i8 0, i8* %ptr |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ret void |
| } |
| |
| define void @test2_no_null_opt(i8* %ptr) #0 { |
| ; CHECK-LABEL: @test2_no_null_opt( |
| ; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null |
| ; CHECK-NEXT: ret void |
| ; |
| store i8 0, i8* %ptr |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ret void |
| } |
| |
| define void @test3() { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1 |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| %ptr = alloca i8 |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ret void |
| } |
| |
| ;; OK to remove icmp here since ptr is coming from alloca. |
| |
| define void @test3_no_null_opt() #0 { |
| ; CHECK-LABEL: @test3_no_null_opt( |
| ; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1 |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| %ptr = alloca i8 |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1) |
| |
| define void @test4(i8* %dest, i8* %src) { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| icmp ne i8* %src, null |
| ret void |
| } |
| |
| define void @test4_no_null_opt(i8* %dest, i8* %src) #0 { |
| ; CHECK-LABEL: @test4_no_null_opt( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| icmp ne i8* %src, null |
| ret void |
| } |
| |
| declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i1) |
| define void @test5(i8* %dest, i8* %src) { |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| icmp ne i8* %src, null |
| ret void |
| } |
| |
| define void @test5_no_null_opt(i8* %dest, i8* %src) #0 { |
| ; CHECK-LABEL: @test5_no_null_opt( |
| ; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| icmp ne i8* %src, null |
| ret void |
| } |
| |
| declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1) |
| define void @test6(i8* %dest) { |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| ret void |
| } |
| |
| define void @test6_no_null_opt(i8* %dest) #0 { |
| ; CHECK-LABEL: @test6_no_null_opt( |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| ret void |
| } |
| |
| define void @test7(i8* %dest, i8* %src, i32 %len) { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 [[LEN:%.*]], i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null |
| ; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i1 false) |
| br label %bb |
| bb: |
| %KEEP1 = icmp ne i8* %dest, null |
| %KEEP2 = icmp ne i8* %src, null |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i1) |
| define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1)* [[DEST:%.*]], i8 addrspace(1)* [[SRC:%.*]], i32 1, i1 false) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8 addrspace(1)* [[DEST]], null |
| ; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8 addrspace(1)* [[SRC]], null |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i1 false) |
| br label %bb |
| bb: |
| %KEEP1 = icmp ne i8 addrspace(1) * %dest, null |
| %KEEP2 = icmp ne i8 addrspace(1) * %src, null |
| ret void |
| } |
| |
| define void @test9(i8* %dest, i8* %src) { |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 true) |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null |
| ; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null |
| ; CHECK-NEXT: ret void |
| ; |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 true) |
| br label %bb |
| bb: |
| %KEEP1 = icmp ne i8* %dest, null |
| %KEEP2 = icmp ne i8* %src, null |
| ret void |
| } |
| |
| declare void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) |
| |
| define void @test10(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) { |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null |
| ; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]] |
| ; CHECK: non_null: |
| ; CHECK-NEXT: call void @test10_helper(i8* nonnull [[ARG1]], i8* [[ARG2:%.*]], i32 [[NON_POINTER_ARG:%.*]]) |
| ; CHECK-NEXT: br label [[NULL]] |
| ; CHECK: null: |
| ; CHECK-NEXT: call void @test10_helper(i8* [[ARG1]], i8* [[ARG2]], i32 [[NON_POINTER_ARG]]) |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %is_null = icmp eq i8* %arg1, null |
| br i1 %is_null, label %null, label %non_null |
| |
| non_null: |
| call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) |
| br label %null |
| |
| null: |
| call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) |
| ret void |
| } |
| |
| declare void @test11_helper(i8* %arg) |
| |
| define void @test11(i8* %arg1, i8** %arg2) { |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null |
| ; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]] |
| ; CHECK: non_null: |
| ; CHECK-NEXT: br label [[MERGE:%.*]] |
| ; CHECK: null: |
| ; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = alloca i8, align 1 |
| ; CHECK-NEXT: br label [[MERGE]] |
| ; CHECK: merge: |
| ; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ] |
| ; CHECK-NEXT: call void @test11_helper(i8* nonnull [[MERGED_ARG]]) |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %is_null = icmp eq i8* %arg1, null |
| br i1 %is_null, label %null, label %non_null |
| |
| non_null: |
| br label %merge |
| |
| null: |
| %another_arg = alloca i8 |
| br label %merge |
| |
| merge: |
| %merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null] |
| call void @test11_helper(i8* %merged_arg) |
| ret void |
| } |
| |
| declare void @test12_helper(i8* %arg) |
| |
| define void @test12(i8* %arg1, i8** %arg2) { |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null |
| ; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]] |
| ; CHECK: non_null: |
| ; CHECK-NEXT: br label [[MERGE:%.*]] |
| ; CHECK: null: |
| ; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = load i8*, i8** [[ARG2:%.*]], align 8, !nonnull !0 |
| ; CHECK-NEXT: br label [[MERGE]] |
| ; CHECK: merge: |
| ; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ] |
| ; CHECK-NEXT: call void @test12_helper(i8* nonnull [[MERGED_ARG]]) |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %is_null = icmp eq i8* %arg1, null |
| br i1 %is_null, label %null, label %non_null |
| |
| non_null: |
| br label %merge |
| |
| null: |
| %another_arg = load i8*, i8** %arg2, !nonnull !{} |
| br label %merge |
| |
| merge: |
| %merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null] |
| call void @test12_helper(i8* %merged_arg) |
| ret void |
| } |
| |
| define i1 @test_store_same_block(i8* %arg) { |
| ; CHECK-LABEL: @test_store_same_block( |
| ; CHECK-NEXT: store i8 0, i8* [[ARG:%.*]], align 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8* [[ARG]], null |
| ; CHECK-NEXT: ret i1 true |
| ; |
| store i8 0, i8* %arg |
| %cmp = icmp ne i8* %arg, null |
| ret i1 %cmp |
| } |
| |
| attributes #0 = { null_pointer_is_valid } |