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llvm-mirror/test/Analysis/StackSafetyAnalysis/ipa-alias.ll
Vitaly Buka 5eed995b68 [StackSafety] Run ThinLTO 
Summary:
ThinLTO linking runs dataflow processing on collected
function parameters. Then StackSafetyGlobalInfoWrapperPass
in ThinLTO backend will run as usual looking up to external
symbol in the summary if needed.

Depends on D80985.

Reviewers: eugenis, pcc

Reviewed By: eugenis

Subscribers: inglorion, hiraditya, steven_wu, dexonsmith, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D81242
2020-06-12 18:11:29 -07:00

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; REQUIRES: aarch64-registered-target
; Test IPA over a single combined file
; RUN: llvm-as %s -o %t0.bc
; RUN: llvm-as %S/Inputs/ipa-alias.ll -o %t1.bc
; RUN: llvm-link %t0.bc %t1.bc -o %t.combined.bc
; RUN: opt -S -analyze -stack-safety-local %t.combined.bc | FileCheck %s --check-prefixes=CHECK,LOCAL
; RUN: opt -S -passes="print<stack-safety-local>" -disable-output %t.combined.bc 2>&1 | FileCheck %s --check-prefixes=CHECK,LOCAL
; RUN: opt -S -analyze -stack-safety %t.combined.bc | FileCheck %s --check-prefixes=CHECK,GLOBAL,NOLTO
; RUN: opt -S -passes="print-stack-safety" -disable-output %t.combined.bc 2>&1 | FileCheck %s --check-prefixes=CHECK,GLOBAL,NOLTO
; Do an end-to-test using the new LTO API
; RUN: opt -module-summary %s -o %t.summ0.bc
; RUN: opt -module-summary %S/Inputs/ipa-alias.ll -o %t.summ1.bc
; RUN: llvm-lto2 run %t.summ0.bc %t.summ1.bc -o %t.lto -stack-safety-print -stack-safety-run -save-temps -thinlto-threads 1 -O0 \
; RUN: -r %t.summ0.bc,PreemptableAliasWrite1, \
; RUN: -r %t.summ0.bc,AliasToPreemptableAliasWrite1, \
; RUN: -r %t.summ0.bc,InterposableAliasWrite1, \
; RUN: -r %t.summ0.bc,AliasWrite1, \
; RUN: -r %t.summ0.bc,BitcastAliasWrite1, \
; RUN: -r %t.summ0.bc,AliasToBitcastAliasWrite1, \
; RUN: -r %t.summ0.bc,PreemptableAliasCall,px \
; RUN: -r %t.summ0.bc,InterposableAliasCall,px \
; RUN: -r %t.summ0.bc,AliasCall,px \
; RUN: -r %t.summ0.bc,BitcastAliasCall,px \
; RUN: -r %t.summ1.bc,PreemptableAliasWrite1,px \
; RUN: -r %t.summ1.bc,AliasToPreemptableAliasWrite1,px \
; RUN: -r %t.summ1.bc,InterposableAliasWrite1,px \
; RUN: -r %t.summ1.bc,AliasWrite1,px \
; RUN: -r %t.summ1.bc,BitcastAliasWrite1,px \
; RUN: -r %t.summ1.bc,AliasToBitcastAliasWrite1,px \
; RUN: -r %t.summ1.bc,Write1,px 2>&1 | FileCheck %s --check-prefixes=CHECK,GLOBAL,LTO
; RUN: llvm-lto2 run %t.summ0.bc %t.summ1.bc -o %t-newpm.lto -stack-safety-print -stack-safety-run -save-temps -use-new-pm -thinlto-threads 1 -O0 \
; RUN: -r %t.summ0.bc,PreemptableAliasWrite1, \
; RUN: -r %t.summ0.bc,AliasToPreemptableAliasWrite1, \
; RUN: -r %t.summ0.bc,InterposableAliasWrite1, \
; RUN: -r %t.summ0.bc,AliasWrite1, \
; RUN: -r %t.summ0.bc,BitcastAliasWrite1, \
; RUN: -r %t.summ0.bc,AliasToBitcastAliasWrite1, \
; RUN: -r %t.summ0.bc,PreemptableAliasCall,px \
; RUN: -r %t.summ0.bc,InterposableAliasCall,px \
; RUN: -r %t.summ0.bc,AliasCall,px \
; RUN: -r %t.summ0.bc,BitcastAliasCall,px \
; RUN: -r %t.summ1.bc,PreemptableAliasWrite1,px \
; RUN: -r %t.summ1.bc,AliasToPreemptableAliasWrite1,px \
; RUN: -r %t.summ1.bc,InterposableAliasWrite1,px \
; RUN: -r %t.summ1.bc,AliasWrite1,px \
; RUN: -r %t.summ1.bc,BitcastAliasWrite1,px \
; RUN: -r %t.summ1.bc,AliasToBitcastAliasWrite1,px \
; RUN: -r %t.summ1.bc,Write1,px 2>&1 | FileCheck %s --check-prefixes=CHECK,GLOBAL,LTO
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux"
attributes #0 = { sanitize_memtag "target-features"="+mte,+neon" }
declare void @PreemptableAliasWrite1(i8* %p)
declare void @AliasToPreemptableAliasWrite1(i8* %p)
declare void @InterposableAliasWrite1(i8* %p)
; Aliases to interposable aliases are not allowed
declare void @AliasWrite1(i8* %p)
declare void @BitcastAliasWrite1(i32* %p)
declare void @AliasToBitcastAliasWrite1(i8* %p)
; Call to dso_preemptable alias to a dso_local aliasee
define void @PreemptableAliasCall() #0 {
; CHECK-LABEL: @PreemptableAliasCall dso_preemptable{{$}}
; CHECK-NEXT: args uses:
; CHECK-NEXT: allocas uses:
; LOCAL-NEXT: x1[1]: empty-set, @PreemptableAliasWrite1(arg0, [0,1)){{$}}
; GLOBAL-NEXT: x1[1]: full-set, @PreemptableAliasWrite1(arg0, [0,1)){{$}}
; LOCAL-NEXT: x2[1]: empty-set, @AliasToPreemptableAliasWrite1(arg0, [0,1)){{$}}
; GLOBAL-NEXT: x2[1]: [0,1), @AliasToPreemptableAliasWrite1(arg0, [0,1)){{$}}
; CHECK-NOT: ]:
entry:
%x1 = alloca i8
call void @PreemptableAliasWrite1(i8* %x1)
%x2 = alloca i8
; Alias to a preemptable alias is not preemptable
call void @AliasToPreemptableAliasWrite1(i8* %x2)
ret void
}
; Call to an interposable alias to a non-interposable aliasee
define void @InterposableAliasCall() #0 {
; CHECK-LABEL: @InterposableAliasCall dso_preemptable{{$}}
; CHECK-NEXT: args uses:
; CHECK-NEXT: allocas uses:
; LOCAL-NEXT: x[1]: empty-set, @InterposableAliasWrite1(arg0, [0,1)){{$}}
; NOLTO-NEXT: x[1]: full-set, @InterposableAliasWrite1(arg0, [0,1)){{$}}
; LTO-NEXT: x[1]: [0,1), @InterposableAliasWrite1(arg0, [0,1)){{$}}
; CHECK-NOT: ]:
entry:
%x = alloca i8
; ThinLTO can resolve the prevailing implementation for interposable definitions.
call void @InterposableAliasWrite1(i8* %x)
ret void
}
; Call to a dso_local/non-interposable alias/aliasee
define void @AliasCall() #0 {
; CHECK-LABEL: @AliasCall dso_preemptable{{$}}
; CHECK-NEXT: args uses:
; CHECK-NEXT: allocas uses:
; LOCAL-NEXT: x[1]: empty-set, @AliasWrite1(arg0, [0,1)){{$}}
; GLOBAL-NEXT: x[1]: [0,1), @AliasWrite1(arg0, [0,1)){{$}}
; CHECK-NOT: ]:
entry:
%x = alloca i8
call void @AliasWrite1(i8* %x)
ret void
}
; Call to a bitcasted dso_local/non-interposable alias/aliasee
define void @BitcastAliasCall() #0 {
; CHECK-LABEL: @BitcastAliasCall dso_preemptable{{$}}
; CHECK-NEXT: args uses:
; CHECK-NEXT: allocas uses:
; LOCAL-NEXT: x1[4]: empty-set, @BitcastAliasWrite1(arg0, [0,1)){{$}}
; GLOBAL-NEXT: x1[4]: [0,1), @BitcastAliasWrite1(arg0, [0,1)){{$}}
; LOCAL-NEXT: x2[1]: empty-set, @AliasToBitcastAliasWrite1(arg0, [0,1)){{$}}
; GLOBAL-NEXT: x2[1]: [0,1), @AliasToBitcastAliasWrite1(arg0, [0,1)){{$}}
; CHECK-NOT: ]:
entry:
%x1 = alloca i32
call void @BitcastAliasWrite1(i32* %x1)
%x2 = alloca i8
call void @AliasToBitcastAliasWrite1(i8* %x2)
ret void
}
; The rest is from Inputs/ipa-alias.ll
; CHECK-LABEL: @Write1{{$}}
; CHECK-NEXT: args uses:
; CHECK-NEXT: p[]: [0,1){{$}}
; CHECK-NEXT: allocas uses:
; CHECK-NOT: ]:
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