derek.holloway
7502bf64a4
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89 lines
2.7 KiB
LLVM
89 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes='require<collector-metadata>,function(gc-lowering)' < %s | FileCheck %s
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declare ptr @llvm_gc_allocate(i32)
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declare void @llvm_gc_initialize(i32)
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declare void @llvm.gcroot(ptr, ptr)
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declare void @llvm.gcwrite(ptr, ptr, ptr)
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define i32 @main() gc "shadow-stack" {
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; CHECK-LABEL: define i32 @main() gc "shadow-stack" {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca ptr, align 8
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; CHECK-NEXT: store ptr null, ptr [[A]], align 8
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; CHECK-NEXT: [[B:%.*]] = alloca ptr, align 8
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; CHECK-NEXT: store ptr null, ptr [[B]], align 8
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; CHECK-NEXT: call void @llvm_gc_initialize(i32 1048576)
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; CHECK-NEXT: call void @llvm.gcroot(ptr [[A]], ptr null)
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; CHECK-NEXT: [[APTR:%.*]] = call ptr @llvm_gc_allocate(i32 10)
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; CHECK-NEXT: store ptr [[APTR]], ptr [[A]], align 8
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; CHECK-NEXT: call void @llvm.gcroot(ptr [[B]], ptr null)
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; CHECK-NEXT: [[B_UPGRD_1:%.*]] = call ptr @llvm_gc_allocate(i32 8)
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; CHECK-NEXT: store ptr [[B_UPGRD_1]], ptr [[B]], align 8
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; CHECK-NEXT: [[B_1:%.*]] = load ptr, ptr [[B]], align 8
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; CHECK-NEXT: [[A_1:%.*]] = load ptr, ptr [[A]], align 8
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; CHECK-NEXT: store ptr [[A_1]], ptr [[B_1]], align 8
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%A = alloca ptr
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%B = alloca ptr
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call void @llvm_gc_initialize(i32 1048576) ; Start with 1MB heap
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;; ptr A;
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call void @llvm.gcroot(ptr %A, ptr null)
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;; A = gcalloc(10);
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%Aptr = call ptr @llvm_gc_allocate(i32 10)
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store ptr %Aptr, ptr %A
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;; ptr B;
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call void @llvm.gcroot(ptr %B, ptr null)
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;; B = gcalloc(4);
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%B.upgrd.1 = call ptr @llvm_gc_allocate(i32 8)
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store ptr %B.upgrd.1, ptr %B
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;; *B = A;
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%B.1 = load ptr, ptr %B
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%A.1 = load ptr, ptr %A
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call void @llvm.gcwrite(ptr %A.1, ptr %B.upgrd.1, ptr %B.1)
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ret i32 0
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}
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define void @no_gc() {
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; CHECK-LABEL: define void @no_gc() {
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; CHECK-NEXT: ret void
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;
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ret void
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}
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@metadata = constant i32 0
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define void @non_ptr_alloca_root() gc "shadow-stack" {
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; CHECK-LABEL: define void @non_ptr_alloca_root() gc "shadow-stack" {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %A = alloca double, align 8
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; CHECK-NEXT: store double 0.000000e+00, ptr %A, align 8
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; CHECK-NEXT: %B = alloca { double, double }, align 8
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; CHECK-NEXT: store { double, double } zeroinitializer, ptr %B, align 8
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; CHECK-NEXT: call void @llvm.gcroot(ptr %A, ptr @metadata)
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; CHECK-NEXT: call void @llvm.gcroot(ptr %B, ptr @metadata)
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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entry:
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%A = alloca double
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%B = alloca { double, double }
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;; ptr A;
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call void @llvm.gcroot(ptr %A, ptr @metadata)
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;; ptr B;
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call void @llvm.gcroot(ptr %B, ptr @metadata)
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ret void
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}
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