derek.holloway
7502bf64a4
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40 lines
1.8 KiB
LLVM
40 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -S -mtriple=aarch64-pc-linux-- -passes='require<libcall-lowering-info>,safe-stack' %s | FileCheck %s
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define void @foo(i32 %t) #0 {
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; CHECK-LABEL: define void @foo(
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; CHECK-SAME: i32 [[T:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[UNSAFE_STACK_PTR:%.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr, align 8
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; CHECK-NEXT: [[TMP2:%.*]] = call ptr @llvm.stackguard()
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; CHECK-NEXT: [[TMP10:%.*]] = alloca ptr, align 8
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; CHECK-NEXT: store ptr [[TMP2]], ptr [[TMP10]], align 8
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; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[T]] to i64
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; CHECK-NEXT: [[TMP4:%.*]] = mul i64 [[TMP3]], 4
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; CHECK-NEXT: [[TMP5:%.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr, align 8
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; CHECK-NEXT: [[TMP6:%.*]] = sub i64 0, [[TMP4]]
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, ptr [[TMP5]], i64 [[TMP6]]
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; CHECK-NEXT: [[VLA:%.*]] = call ptr @llvm.ptrmask.p0.i64(ptr [[TMP7]], i64 -16)
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; CHECK-NEXT: store ptr [[VLA]], ptr @__safestack_unsafe_stack_ptr, align 8
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; CHECK-NEXT: call void @baz(ptr [[VLA]])
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; CHECK-NEXT: [[TMP8:%.*]] = load ptr, ptr [[TMP10]], align 8
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; CHECK-NEXT: [[TMP9:%.*]] = icmp ne ptr [[TMP2]], [[TMP8]]
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; CHECK-NEXT: br i1 [[TMP9]], label %[[BB10:.*]], label %[[BB11:.*]], !prof [[PROF0:![0-9]+]]
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; CHECK: [[BB10]]:
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; CHECK-NEXT: call void @__stack_chk_fail()
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; CHECK-NEXT: unreachable
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; CHECK: [[BB11]]:
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; CHECK-NEXT: store ptr [[UNSAFE_STACK_PTR]], ptr @__safestack_unsafe_stack_ptr, align 8
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; CHECK-NEXT: ret void
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;
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%vla = alloca i32, i32 %t, align 4
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call void @baz(ptr %vla)
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ret void
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}
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declare void @baz(ptr)
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attributes #0 = { nounwind safestack sspstrong }
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;.
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; CHECK: [[PROF0]] = !{!"branch_weights", i32 2147481600, i32 2048}
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;.
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