From 33c9438f116693b2f97c0c60376c32e0b8cb62f2 Mon Sep 17 00:00:00 2001
From: Sami Tolvanen <samitolvanen@google.com>
Date: Tue, 22 Jun 2021 12:09:44 -0700
Subject: [PATCH] Revert "ThinLTO: Fix inline assembly references to static
 functions with CFI"

This reverts commit 4474958d3a97dede2caa0920f7c4a4dc7aac57d3.

Breaks check-llvm on Mac.
---
 .../Transforms/IPO/ThinLTOBitcodeWriter.cpp   |  9 ---------
 .../cfi-icall-static-inline-asm.ll            | 19 -------------------
 2 files changed, 28 deletions(-)
 delete mode 100644 llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll

diff --git a/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp b/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
index 255b1f7f4357..37329b489555 100644
--- a/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
+++ b/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
@@ -69,15 +69,6 @@ void promoteInternals(Module &ExportM, Module &ImportM, StringRef ModuleId,
       ImportGV->setName(NewName);
       ImportGV->setVisibility(GlobalValue::HiddenVisibility);
     }
-
-    if (Function *F = dyn_cast<Function>(&ExportGV)) {
-      // Create a local alias with the original name to avoid breaking
-      // references from inline assembly.
-      GlobalAlias *A =
-          GlobalAlias::create(F->getValueType(), F->getAddressSpace(),
-                              GlobalValue::InternalLinkage, Name, F, &ExportM);
-      appendToCompilerUsed(ExportM, A);
-    }
   }
 
   if (!RenamedComdats.empty())
diff --git a/llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll b/llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll
deleted file mode 100644
index 70f5322faa52..000000000000
--- a/llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll
+++ /dev/null
@@ -1,19 +0,0 @@
-; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o - %s | llvm-modextract -b -n 0 -o - | llvm-dis | FileCheck %s
-
-; CHECK: @a = internal alias {{.*}}@a.[[HASH:[0-9a-f]+]]
-
-define void @b() {
-  %f = alloca void ()*, align 8
-  ; CHECK: store{{.*}} @a.[[HASH]],{{.*}} %f
-  store void ()* @a, void ()** %f, align 8
-  ; CHECK: %1 = call void ()* asm sideeffect "leaq a(%rip)
-  %1 = call void ()* asm sideeffect "leaq a(%rip), $0\0A\09", "=r,~{dirflag},~{fpsr},~{flags}"()
-  ret void
-}
-
-; CHECK: define{{.*}} @a.[[HASH]](){{.*}} !type
-define internal void @a() !type !0 {
-  ret void
-}
-
-!0 = !{i64 0, !"typeid1"}