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llvm-mirror/test/Transforms/Inline/attributes.ll
Evgeniy Stepanov e8363137ea ARM MTE stack sanitizer. 
Add "memtag" sanitizer that detects and mitigates stack memory issues
using armv8.5 Memory Tagging Extension.

It is similar in principle to HWASan, which is a software implementation
of the same idea, but there are enough differencies to warrant a new
sanitizer type IMHO. It is also expected to have very different
performance properties.

The new sanitizer does not have a runtime library (it may grow one
later, along with a "debugging" mode). Similar to SafeStack and
StackProtector, the instrumentation pass (in a follow up change) will be
inserted in all cases, but will only affect functions marked with the
new sanitize_memtag attribute.

Reviewers: pcc, hctim, vitalybuka, ostannard

Subscribers: srhines, mehdi_amini, javed.absar, kristof.beyls, hiraditya, cryptoad, steven_wu, dexonsmith, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D64169

llvm-svn: 366123
2019-07-15 20:02:23 +00:00

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; RUN: opt < %s -inline -S | FileCheck %s
; RUN: opt < %s -passes='cgscc(inline)' -S | FileCheck %s
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
define i32 @noattr_callee(i32 %i) {
ret i32 %i
}
define i32 @sanitize_address_callee(i32 %i) sanitize_address {
ret i32 %i
}
define i32 @sanitize_hwaddress_callee(i32 %i) sanitize_hwaddress {
ret i32 %i
}
define i32 @sanitize_thread_callee(i32 %i) sanitize_thread {
ret i32 %i
}
define i32 @sanitize_memory_callee(i32 %i) sanitize_memory {
ret i32 %i
}
define i32 @sanitize_memtag_callee(i32 %i) sanitize_memtag {
ret i32 %i
}
define i32 @safestack_callee(i32 %i) safestack {
ret i32 %i
}
define i32 @slh_callee(i32 %i) speculative_load_hardening {
ret i32 %i
}
define i32 @alwaysinline_callee(i32 %i) alwaysinline {
ret i32 %i
}
define i32 @alwaysinline_sanitize_address_callee(i32 %i) alwaysinline sanitize_address {
ret i32 %i
}
define i32 @alwaysinline_sanitize_hwaddress_callee(i32 %i) alwaysinline sanitize_hwaddress {
ret i32 %i
}
define i32 @alwaysinline_sanitize_thread_callee(i32 %i) alwaysinline sanitize_thread {
ret i32 %i
}
define i32 @alwaysinline_sanitize_memory_callee(i32 %i) alwaysinline sanitize_memory {
ret i32 %i
}
define i32 @alwaysinline_sanitize_memtag_callee(i32 %i) alwaysinline sanitize_memtag {
ret i32 %i
}
define i32 @alwaysinline_safestack_callee(i32 %i) alwaysinline safestack {
ret i32 %i
}
; Check that:
; * noattr callee is inlined into noattr caller,
; * sanitize_(address|memory|thread) callee is not inlined into noattr caller,
; * alwaysinline callee is always inlined no matter what sanitize_* attributes are present.
define i32 @test_no_sanitize_address(i32 %arg) {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_address_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_address_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_no_sanitize_address(
; CHECK-NEXT: @sanitize_address_callee
; CHECK-NEXT: ret i32
}
define i32 @test_no_sanitize_hwaddress(i32 %arg) {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_hwaddress_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_hwaddress_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_no_sanitize_hwaddress(
; CHECK-NEXT: @sanitize_hwaddress_callee
; CHECK-NEXT: ret i32
}
define i32 @test_no_sanitize_memory(i32 %arg) {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_memory_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_memory_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_no_sanitize_memory(
; CHECK-NEXT: @sanitize_memory_callee
; CHECK-NEXT: ret i32
}
define i32 @test_no_sanitize_thread(i32 %arg) {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_thread_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_thread_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_no_sanitize_thread(
; CHECK-NEXT: @sanitize_thread_callee
; CHECK-NEXT: ret i32
}
define i32 @test_no_sanitize_memtag(i32 %arg) {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_memtag_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_memtag_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_no_sanitize_memtag(
; CHECK-NEXT: @sanitize_memtag_callee
; CHECK-NEXT: ret i32
}
; Check that:
; * noattr callee is not inlined into sanitize_(address|memory|thread) caller,
; * sanitize_(address|memory|thread) callee is inlined into the caller with the same attribute,
; * alwaysinline callee is always inlined no matter what sanitize_* attributes are present.
define i32 @test_sanitize_address(i32 %arg) sanitize_address {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_address_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_address_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_sanitize_address(
; CHECK-NEXT: @noattr_callee
; CHECK-NEXT: ret i32
}
define i32 @test_sanitize_hwaddress(i32 %arg) sanitize_hwaddress {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_hwaddress_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_hwaddress_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_sanitize_hwaddress(
; CHECK-NEXT: @noattr_callee
; CHECK-NEXT: ret i32
}
define i32 @test_sanitize_memory(i32 %arg) sanitize_memory {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_memory_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_memory_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_sanitize_memory(
; CHECK-NEXT: @noattr_callee
; CHECK-NEXT: ret i32
}
define i32 @test_sanitize_thread(i32 %arg) sanitize_thread {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_thread_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_thread_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_sanitize_thread(
; CHECK-NEXT: @noattr_callee
; CHECK-NEXT: ret i32
}
define i32 @test_sanitize_memtag(i32 %arg) sanitize_memtag {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @sanitize_memtag_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_sanitize_memtag_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_sanitize_memtag(
; CHECK-NEXT: @noattr_callee
; CHECK-NEXT: ret i32
}
define i32 @test_safestack(i32 %arg) safestack {
%x1 = call i32 @noattr_callee(i32 %arg)
%x2 = call i32 @safestack_callee(i32 %x1)
%x3 = call i32 @alwaysinline_callee(i32 %x2)
%x4 = call i32 @alwaysinline_safestack_callee(i32 %x3)
ret i32 %x4
; CHECK-LABEL: @test_safestack(
; CHECK-NEXT: @noattr_callee
; CHECK-NEXT: ret i32
}
; Can inline a normal function into an SLH'ed function.
define i32 @test_caller_slh(i32 %i) speculative_load_hardening {
; CHECK-LABEL: @test_caller_slh(
; CHECK-SAME: ) [[SLH:.*]] {
; CHECK-NOT: call
; CHECK: ret i32
entry:
%callee = call i32 @noattr_callee(i32 %i)
ret i32 %callee
}
; Can inline a SLH'ed function into a normal one, propagating SLH.
define i32 @test_callee_slh(i32 %i) {
; CHECK-LABEL: @test_callee_slh(
; CHECK-SAME: ) [[SLH:.*]] {
; CHECK-NOT: call
; CHECK: ret i32
entry:
%callee = call i32 @slh_callee(i32 %i)
ret i32 %callee
}
; Check that a function doesn't get inlined if target-cpu strings don't match
; exactly.
define i32 @test_target_cpu_callee0(i32 %i) "target-cpu"="corei7" {
ret i32 %i
}
define i32 @test_target_cpu0(i32 %i) "target-cpu"="corei7" {
%1 = call i32 @test_target_cpu_callee0(i32 %i)
ret i32 %1
; CHECK-LABEL: @test_target_cpu0(
; CHECK-NOT: @test_target_cpu_callee0
}
define i32 @test_target_cpu_callee1(i32 %i) "target-cpu"="x86-64" {
ret i32 %i
}
define i32 @test_target_cpu1(i32 %i) "target-cpu"="corei7" {
%1 = call i32 @test_target_cpu_callee1(i32 %i)
ret i32 %1
; CHECK-LABEL: @test_target_cpu1(
; CHECK-NEXT: @test_target_cpu_callee1
; CHECK-NEXT: ret i32
}
; Check that a function doesn't get inlined if target-features strings don't
; match exactly.
define i32 @test_target_features_callee0(i32 %i) "target-features"="+sse4.2" {
ret i32 %i
}
define i32 @test_target_features0(i32 %i) "target-features"="+sse4.2" {
%1 = call i32 @test_target_features_callee0(i32 %i)
ret i32 %1
; CHECK-LABEL: @test_target_features0(
; CHECK-NOT: @test_target_features_callee0
}
define i32 @test_target_features_callee1(i32 %i) "target-features"="+avx2" {
ret i32 %i
}
define i32 @test_target_features1(i32 %i) "target-features"="+sse4.2" {
%1 = call i32 @test_target_features_callee1(i32 %i)
ret i32 %1
; CHECK-LABEL: @test_target_features1(
; CHECK-NEXT: @test_target_features_callee1
; CHECK-NEXT: ret i32
}
define i32 @less-precise-fpmad_callee0(i32 %i) "less-precise-fpmad"="false" {
ret i32 %i
; CHECK: @less-precise-fpmad_callee0(i32 %i) [[FPMAD_FALSE:#[0-9]+]] {
; CHECK-NEXT: ret i32
}
define i32 @less-precise-fpmad_callee1(i32 %i) "less-precise-fpmad"="true" {
ret i32 %i
; CHECK: @less-precise-fpmad_callee1(i32 %i) [[FPMAD_TRUE:#[0-9]+]] {
; CHECK-NEXT: ret i32
}
define i32 @test_less-precise-fpmad0(i32 %i) "less-precise-fpmad"="false" {
%1 = call i32 @less-precise-fpmad_callee0(i32 %i)
ret i32 %1
; CHECK: @test_less-precise-fpmad0(i32 %i) [[FPMAD_FALSE]] {
; CHECK-NEXT: ret i32
}
define i32 @test_less-precise-fpmad1(i32 %i) "less-precise-fpmad"="false" {
%1 = call i32 @less-precise-fpmad_callee1(i32 %i)
ret i32 %1
; CHECK: @test_less-precise-fpmad1(i32 %i) [[FPMAD_FALSE]] {
; CHECK-NEXT: ret i32
}
define i32 @test_less-precise-fpmad2(i32 %i) "less-precise-fpmad"="true" {
%1 = call i32 @less-precise-fpmad_callee0(i32 %i)
ret i32 %1
; CHECK: @test_less-precise-fpmad2(i32 %i) [[FPMAD_FALSE]] {
; CHECK-NEXT: ret i32
}
define i32 @test_less-precise-fpmad3(i32 %i) "less-precise-fpmad"="true" {
%1 = call i32 @less-precise-fpmad_callee1(i32 %i)
ret i32 %1
; CHECK: @test_less-precise-fpmad3(i32 %i) [[FPMAD_TRUE]] {
; CHECK-NEXT: ret i32
}
define i32 @no-implicit-float_callee0(i32 %i) {
ret i32 %i
; CHECK: @no-implicit-float_callee0(i32 %i) {
; CHECK-NEXT: ret i32
}
define i32 @no-implicit-float_callee1(i32 %i) noimplicitfloat {
ret i32 %i
; CHECK: @no-implicit-float_callee1(i32 %i) [[NOIMPLICITFLOAT:#[0-9]+]] {
; CHECK-NEXT: ret i32
}
define i32 @test_no-implicit-float0(i32 %i) {
%1 = call i32 @no-implicit-float_callee0(i32 %i)
ret i32 %1
; CHECK: @test_no-implicit-float0(i32 %i) {
; CHECK-NEXT: ret i32
}
define i32 @test_no-implicit-float1(i32 %i) {
%1 = call i32 @no-implicit-float_callee1(i32 %i)
ret i32 %1
; CHECK: @test_no-implicit-float1(i32 %i) [[NOIMPLICITFLOAT]] {
; CHECK-NEXT: ret i32
}
define i32 @test_no-implicit-float2(i32 %i) noimplicitfloat {
%1 = call i32 @no-implicit-float_callee0(i32 %i)
ret i32 %1
; CHECK: @test_no-implicit-float2(i32 %i) [[NOIMPLICITFLOAT]] {
; CHECK-NEXT: ret i32
}
define i32 @test_no-implicit-float3(i32 %i) noimplicitfloat {
%1 = call i32 @no-implicit-float_callee1(i32 %i)
ret i32 %1
; CHECK: @test_no-implicit-float3(i32 %i) [[NOIMPLICITFLOAT]] {
; CHECK-NEXT: ret i32
}
; Check that no-jump-tables flag propagates from inlined callee to caller
define i32 @no-use-jump-tables_callee0(i32 %i) {
ret i32 %i
; CHECK: @no-use-jump-tables_callee0(i32 %i) {
; CHECK-NEXT: ret i32
}
define i32 @no-use-jump-tables_callee1(i32 %i) "no-jump-tables"="true" {
ret i32 %i
; CHECK: @no-use-jump-tables_callee1(i32 %i) [[NOUSEJUMPTABLES:#[0-9]+]] {
; CHECK-NEXT: ret i32
}
define i32 @test_no-use-jump-tables0(i32 %i) {
%1 = call i32 @no-use-jump-tables_callee0(i32 %i)
ret i32 %1
; CHECK: @test_no-use-jump-tables0(i32 %i) {
; CHECK-NEXT: ret i32
}
define i32 @test_no-use-jump-tables1(i32 %i) {
%1 = call i32 @no-use-jump-tables_callee1(i32 %i)
ret i32 %1
; CHECK: @test_no-use-jump-tables1(i32 %i) [[NOUSEJUMPTABLES]] {
; CHECK-NEXT: ret i32
}
define i32 @test_no-use-jump-tables2(i32 %i) "no-jump-tables"="true" {
%1 = call i32 @no-use-jump-tables_callee0(i32 %i)
ret i32 %1
; CHECK: @test_no-use-jump-tables2(i32 %i) [[NOUSEJUMPTABLES]] {
; CHECK-NEXT: ret i32
}
define i32 @test_no-use-jump-tables3(i32 %i) "no-jump-tables"="true" {
%1 = call i32 @no-use-jump-tables_callee1(i32 %i)
ret i32 %1
; CHECK: @test_no-use-jump-tables3(i32 %i) [[NOUSEJUMPTABLES]] {
; CHECK-NEXT: ret i32
}
; Callee with "null-pointer-is-valid"="true" attribute should not be inlined
; into a caller without this attribute.
; Exception: alwaysinline callee can still be inlined but
; "null-pointer-is-valid"="true" should get copied to caller.
define i32 @null-pointer-is-valid_callee0(i32 %i) "null-pointer-is-valid"="true" {
ret i32 %i
; CHECK: @null-pointer-is-valid_callee0(i32 %i)
; CHECK-NEXT: ret i32
}
define i32 @null-pointer-is-valid_callee1(i32 %i) alwaysinline "null-pointer-is-valid"="true" {
ret i32 %i
; CHECK: @null-pointer-is-valid_callee1(i32 %i)
; CHECK-NEXT: ret i32
}
define i32 @null-pointer-is-valid_callee2(i32 %i) {
ret i32 %i
; CHECK: @null-pointer-is-valid_callee2(i32 %i)
; CHECK-NEXT: ret i32
}
; No inlining since caller does not have "null-pointer-is-valid"="true" attribute.
define i32 @test_null-pointer-is-valid0(i32 %i) {
%1 = call i32 @null-pointer-is-valid_callee0(i32 %i)
ret i32 %1
; CHECK: @test_null-pointer-is-valid0(
; CHECK: call i32 @null-pointer-is-valid_callee0
; CHECK-NEXT: ret i32
}
; alwaysinline should force inlining even when caller does not have
; "null-pointer-is-valid"="true" attribute. However, the attribute should be
; copied to caller.
define i32 @test_null-pointer-is-valid1(i32 %i) "null-pointer-is-valid"="false" {
%1 = call i32 @null-pointer-is-valid_callee1(i32 %i)
ret i32 %1
; CHECK: @test_null-pointer-is-valid1(i32 %i) [[NULLPOINTERISVALID:#[0-9]+]] {
; CHECK-NEXT: ret i32
}
; Can inline since both caller and callee have "null-pointer-is-valid"="true"
; attribute.
define i32 @test_null-pointer-is-valid2(i32 %i) "null-pointer-is-valid"="true" {
%1 = call i32 @null-pointer-is-valid_callee2(i32 %i)
ret i32 %1
; CHECK: @test_null-pointer-is-valid2(i32 %i) [[NULLPOINTERISVALID]] {
; CHECK-NEXT: ret i32
}
; CHECK: attributes [[SLH]] = { speculative_load_hardening }
; CHECK: attributes [[FPMAD_FALSE]] = { "less-precise-fpmad"="false" }
; CHECK: attributes [[FPMAD_TRUE]] = { "less-precise-fpmad"="true" }
; CHECK: attributes [[NOIMPLICITFLOAT]] = { noimplicitfloat }
; CHECK: attributes [[NOUSEJUMPTABLES]] = { "no-jump-tables"="true" }
; CHECK: attributes [[NULLPOINTERISVALID]] = { "null-pointer-is-valid"="true" }
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