derek.holloway
7502bf64a4
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69 lines
3.7 KiB
LLVM
69 lines
3.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
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; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s --check-prefix=I386
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; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s --check-prefix=X86-64
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; RUN: opt -passes='require<libcall-lowering-info>,safe-stack' -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s --check-prefix=I386
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; RUN: opt -passes='require<libcall-lowering-info>,safe-stack' -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s --check-prefix=X86-64
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%struct.__jmp_buf_tag = type { [8 x i64], i32, %struct.__sigset_t }
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%struct.__sigset_t = type { [16 x i64] }
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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@buf = internal global [1 x %struct.__jmp_buf_tag] zeroinitializer, align 16
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; setjmp/longjmp test with dynamically sized array.
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; Requires protector.
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define i32 @foo(i32 %size) nounwind uwtable safestack {
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; I386-LABEL: define i32 @foo(
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; I386-SAME: i32 [[SIZE:%.*]]) #[[ATTR0:[0-9]+]] {
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; I386-NEXT: entry:
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; I386-NEXT: [[UNSAFE_STACK_PTR:%.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr, align 4
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; I386-NEXT: [[UNSAFE_STACK_DYNAMIC_PTR:%.*]] = alloca ptr, align 4
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; I386-NEXT: store ptr [[UNSAFE_STACK_PTR]], ptr [[UNSAFE_STACK_DYNAMIC_PTR]], align 4
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; I386-NEXT: [[TMP0:%.*]] = mul i32 [[SIZE]], 4
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; I386-NEXT: [[TMP1:%.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr, align 4
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; I386-NEXT: [[TMP2:%.*]] = sub i32 0, [[TMP0]]
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; I386-NEXT: [[TMP3:%.*]] = getelementptr i8, ptr [[TMP1]], i32 [[TMP2]]
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; I386-NEXT: [[A:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP3]], i32 -16)
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; I386-NEXT: store ptr [[A]], ptr @__safestack_unsafe_stack_ptr, align 4
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; I386-NEXT: store ptr [[A]], ptr [[UNSAFE_STACK_DYNAMIC_PTR]], align 4
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; I386-NEXT: [[CALL:%.*]] = call i32 @_setjmp(ptr @buf) #[[ATTR2:[0-9]+]]
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; I386-NEXT: [[TMP5:%.*]] = load ptr, ptr [[UNSAFE_STACK_DYNAMIC_PTR]], align 4
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; I386-NEXT: store ptr [[TMP5]], ptr @__safestack_unsafe_stack_ptr, align 4
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; I386-NEXT: call void @funcall(ptr [[A]])
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; I386-NEXT: store ptr [[UNSAFE_STACK_PTR]], ptr @__safestack_unsafe_stack_ptr, align 4
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; I386-NEXT: ret i32 0
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;
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; X86-64-LABEL: define i32 @foo(
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; X86-64-SAME: i32 [[SIZE:%.*]]) #[[ATTR0:[0-9]+]] {
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; X86-64-NEXT: entry:
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; X86-64-NEXT: [[UNSAFE_STACK_PTR:%.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr, align 8
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; X86-64-NEXT: [[UNSAFE_STACK_DYNAMIC_PTR:%.*]] = alloca ptr, align 8
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; X86-64-NEXT: store ptr [[UNSAFE_STACK_PTR]], ptr [[UNSAFE_STACK_DYNAMIC_PTR]], align 8
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; X86-64-NEXT: [[TMP0:%.*]] = zext i32 [[SIZE]] to i64
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; X86-64-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
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; X86-64-NEXT: [[TMP2:%.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr, align 8
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; X86-64-NEXT: [[TMP3:%.*]] = sub i64 0, [[TMP1]]
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; X86-64-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[TMP2]], i64 [[TMP3]]
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; X86-64-NEXT: [[A:%.*]] = call ptr @llvm.ptrmask.p0.i64(ptr [[TMP4]], i64 -16)
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; X86-64-NEXT: store ptr [[A]], ptr @__safestack_unsafe_stack_ptr, align 8
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; X86-64-NEXT: store ptr [[A]], ptr [[UNSAFE_STACK_DYNAMIC_PTR]], align 8
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; X86-64-NEXT: [[CALL:%.*]] = call i32 @_setjmp(ptr @buf) #[[ATTR2:[0-9]+]]
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; X86-64-NEXT: [[TMP6:%.*]] = load ptr, ptr [[UNSAFE_STACK_DYNAMIC_PTR]], align 8
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; X86-64-NEXT: store ptr [[TMP6]], ptr @__safestack_unsafe_stack_ptr, align 8
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; X86-64-NEXT: call void @funcall(ptr [[A]])
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; X86-64-NEXT: store ptr [[UNSAFE_STACK_PTR]], ptr @__safestack_unsafe_stack_ptr, align 8
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; X86-64-NEXT: ret i32 0
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;
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entry:
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%a = alloca i32, i32 %size
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%call = call i32 @_setjmp(ptr @buf) returns_twice
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call void @funcall(ptr %a)
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ret i32 0
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}
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declare i32 @_setjmp(ptr)
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declare void @funcall(ptr)
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