125 lines
3.5 KiB
LLVM
125 lines
3.5 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basic-aa -dse -S | FileCheck %s
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target datalayout = "e-p:64:64:64"
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declare void @free(i8* nocapture)
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declare noalias i8* @malloc(i64)
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define void @test(i32* %Q, i32* %P) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[P:%.*]] to i8*
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; CHECK-NEXT: tail call void @free(i8* [[TMP1]]) [[ATTR0:#.*]]
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; CHECK-NEXT: ret void
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;
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%DEAD = load i32, i32* %Q ; <i32> [#uses=1]
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store i32 %DEAD, i32* %P
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%1 = bitcast i32* %P to i8*
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tail call void @free(i8* %1) nounwind
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ret void
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}
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define void @test2({i32, i32}* %P) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast { i32, i32 }* [[P:%.*]] to i8*
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; CHECK-NEXT: tail call void @free(i8* [[TMP1]]) [[ATTR0]]
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; CHECK-NEXT: ret void
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;
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%Q = getelementptr {i32, i32}, {i32, i32} *%P, i32 0, i32 1
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store i32 4, i32* %Q
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%1 = bitcast {i32, i32}* %P to i8*
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tail call void @free(i8* %1) nounwind
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ret void
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}
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define void @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[M:%.*]] = call i8* @malloc(i64 24)
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; CHECK-NEXT: call void @free(i8* [[M]]) [[ATTR0]]
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; CHECK-NEXT: ret void
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;
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%m = call i8* @malloc(i64 24)
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store i8 0, i8* %m
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%m1 = getelementptr i8, i8* %m, i64 1
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store i8 1, i8* %m1
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call void @free(i8* %m) nounwind
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ret void
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}
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; PR11240
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define void @test4(i1 %x) nounwind {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[ALLOC1:%.*]] = tail call noalias i8* @malloc(i64 4) [[ATTR0]]
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; CHECK-NEXT: br i1 [[X:%.*]], label [[SKIPINIT1:%.*]], label [[INIT1:%.*]]
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; CHECK: init1:
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; CHECK-NEXT: br label [[SKIPINIT1]]
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; CHECK: skipinit1:
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; CHECK-NEXT: tail call void @free(i8* [[ALLOC1]]) [[ATTR0]]
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; CHECK-NEXT: ret void
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;
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entry:
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%alloc1 = tail call noalias i8* @malloc(i64 4) nounwind
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br i1 %x, label %skipinit1, label %init1
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init1:
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store i8 1, i8* %alloc1
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br label %skipinit1
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skipinit1:
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tail call void @free(i8* %alloc1) nounwind
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ret void
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}
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define void @test5() {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: tail call void @free(i8* undef) [[ATTR0]]
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; CHECK-NEXT: br label [[BB]]
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;
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br label %bb
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bb:
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tail call void @free(i8* undef) nounwind
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br label %bb
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}
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%struct = type { i32 , i32 }
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; Test case inspired by PR48036.
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define void @delete_field_after(%struct* %ptr) {
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;
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; CHECK-LABEL: @delete_field_after(
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; CHECK-NEXT: [[PTR_F0:%.*]] = getelementptr [[STRUCT:%.*]], %struct* [[PTR:%.*]], i32 1
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; CHECK-NEXT: [[BC:%.*]] = bitcast %struct* [[PTR_F0]] to i8*
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; CHECK-NEXT: [[PTR_F1:%.*]] = getelementptr [[STRUCT]], %struct* [[PTR]], i32 0, i32 1
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; CHECK-NEXT: store i32 0, i32* [[PTR_F1]], align 4
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; CHECK-NEXT: call void @free(i8* [[BC]])
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; CHECK-NEXT: ret void
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;
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%ptr.f0 = getelementptr %struct, %struct* %ptr, i32 1
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%bc = bitcast %struct* %ptr.f0 to i8*
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%ptr.f1 = getelementptr %struct, %struct* %ptr, i32 0, i32 1
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store i32 0, i32* %ptr.f1
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call void @free(i8* %bc)
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ret void
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}
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; Test case inspired by PR48036.
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define void @delete_field_before(%struct* %ptr) {
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; CHECK-LABEL: @delete_field_before(
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; CHECK-NEXT: [[PTR_F0:%.*]] = getelementptr [[STRUCT:%.*]], %struct* [[PTR:%.*]], i32 0
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; CHECK-NEXT: [[BC:%.*]] = bitcast %struct* [[PTR_F0]] to i8*
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; CHECK-NEXT: call void @free(i8* [[BC]])
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; CHECK-NEXT: ret void
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;
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%ptr.f0 = getelementptr %struct, %struct* %ptr, i32 0
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%bc = bitcast %struct* %ptr.f0 to i8*
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%ptr.f1 = getelementptr %struct, %struct* %ptr, i32 1, i32 1
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store i32 0, i32* %ptr.f1
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call void @free(i8* %bc)
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ret void
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}
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