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98 lines
3.4 KiB
LLVM
98 lines
3.4 KiB
LLVM
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; Test IPA over a single combined file
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; RUN: llvm-as %s -o %t0.bc
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; RUN: llvm-as %S/Inputs/ipa-alias.ll -o %t1.bc
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; RUN: llvm-link %t0.bc %t1.bc -o %t.combined.bc
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; RUN: opt -S -analyze -stack-safety-local %t.combined.bc | FileCheck %s --check-prefixes=CHECK,LOCAL
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; RUN: opt -S -passes="print<stack-safety-local>" -disable-output %t.combined.bc 2>&1 | FileCheck %s --check-prefixes=CHECK,LOCAL
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; RUN: opt -S -analyze -stack-safety %t.combined.bc | FileCheck %s --check-prefixes=CHECK,GLOBAL
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; RUN: opt -S -passes="print-stack-safety" -disable-output %t.combined.bc 2>&1 | FileCheck %s --check-prefixes=CHECK,GLOBAL
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @PreemptableAliasWrite1(i8* %p)
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declare void @AliasToPreemptableAliasWrite1(i8* %p)
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declare void @InterposableAliasWrite1(i8* %p)
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; Aliases to interposable aliases are not allowed
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declare void @AliasWrite1(i8* %p)
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declare void @BitcastAliasWrite1(i32* %p)
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declare void @AliasToBitcastAliasWrite1(i8* %p)
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; Call to dso_preemptable alias to a dso_local aliasee
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define void @PreemptableAliasCall() {
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; CHECK-LABEL: @PreemptableAliasCall dso_preemptable{{$}}
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; CHECK-NEXT: args uses:
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; CHECK-NEXT: allocas uses:
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; LOCAL-NEXT: x1[1]: empty-set, @PreemptableAliasWrite1(arg0, [0,1)){{$}}
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; GLOBAL-NEXT: x1[1]: full-set, @PreemptableAliasWrite1(arg0, [0,1)){{$}}
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; LOCAL-NEXT: x2[1]: empty-set, @AliasToPreemptableAliasWrite1(arg0, [0,1)){{$}}
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; GLOBAL-NEXT: x2[1]: [0,1), @AliasToPreemptableAliasWrite1(arg0, [0,1)){{$}}
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; CHECK-NOT: ]:
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entry:
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%x1 = alloca i8
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call void @PreemptableAliasWrite1(i8* %x1)
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%x2 = alloca i8
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; Alias to a preemptable alias is not preemptable
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call void @AliasToPreemptableAliasWrite1(i8* %x2)
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ret void
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}
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; Call to an interposable alias to a non-interposable aliasee
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define void @InterposableAliasCall() {
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; CHECK-LABEL: @InterposableAliasCall dso_preemptable{{$}}
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; CHECK-NEXT: args uses:
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; CHECK-NEXT: allocas uses:
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; LOCAL-NEXT: x[1]: empty-set, @InterposableAliasWrite1(arg0, [0,1)){{$}}
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; GLOBAL-NEXT: x[1]: full-set, @InterposableAliasWrite1(arg0, [0,1)){{$}}
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; CHECK-NOT: ]:
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entry:
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%x = alloca i8
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; ThinLTO can resolve the prevailing implementation for interposable definitions.
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call void @InterposableAliasWrite1(i8* %x)
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ret void
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}
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; Call to a dso_local/non-interposable alias/aliasee
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define void @AliasCall() {
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; CHECK-LABEL: @AliasCall dso_preemptable{{$}}
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; CHECK-NEXT: args uses:
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; CHECK-NEXT: allocas uses:
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; LOCAL-NEXT: x[1]: empty-set, @AliasWrite1(arg0, [0,1)){{$}}
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; GLOBAL-NEXT: x[1]: [0,1), @AliasWrite1(arg0, [0,1)){{$}}
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; CHECK-NOT: ]:
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entry:
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%x = alloca i8
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call void @AliasWrite1(i8* %x)
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ret void
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}
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; Call to a bitcasted dso_local/non-interposable alias/aliasee
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define void @BitcastAliasCall() {
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; CHECK-LABEL: @BitcastAliasCall dso_preemptable{{$}}
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; CHECK-NEXT: args uses:
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; CHECK-NEXT: allocas uses:
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; LOCAL-NEXT: x1[4]: empty-set, @BitcastAliasWrite1(arg0, [0,1)){{$}}
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; GLOBAL-NEXT: x1[4]: [0,1), @BitcastAliasWrite1(arg0, [0,1)){{$}}
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; LOCAL-NEXT: x2[1]: empty-set, @AliasToBitcastAliasWrite1(arg0, [0,1)){{$}}
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; GLOBAL-NEXT: x2[1]: [0,1), @AliasToBitcastAliasWrite1(arg0, [0,1)){{$}}
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; CHECK-NOT: ]:
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entry:
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%x1 = alloca i32
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call void @BitcastAliasWrite1(i32* %x1)
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%x2 = alloca i8
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call void @AliasToBitcastAliasWrite1(i8* %x2)
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ret void
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}
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; The rest is from Inputs/ipa-alias.ll
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; CHECK-LABEL: @Write1{{$}}
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; CHECK-NEXT: args uses:
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; CHECK-NEXT: p[]: [0,1){{$}}
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; CHECK-NEXT: allocas uses:
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; CHECK-NOT: ]:
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