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llvm-mirror/test/Verifier/module-flags-semantic-interposition.ll
serge-sans-paille 1edc654103 Implement -fsemantic-interposition
First attempt at implementing -fsemantic-interposition.

Rely on GlobalValue::isInterposable that already captures most of the expected
behavior.

Rely on a ModuleFlag to state whether we should respect SemanticInterposition or
not. The default remains no.

So this should be a no-op if -fsemantic-interposition isn't used, and if it is,
isInterposable being already used in most optimisation, they should honor it
properly.

Note that it only impacts architecture compiled with -fPIC and no pie.

Differential Revision: https://reviews.llvm.org/D72829
2020-01-31 14:02:33 +01:00

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LLVM

; RUN: not llvm-as < %s -o /dev/null 2>&1 | FileCheck %s
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@foo = dso_local global i32 1, align 4
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"SemanticInterposition", float 1.}
; CHECK: SemanticInterposition metadata requires constant integer argument