From d88cac0a6e908a366f403b37725e765604bc15d3 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 26 Apr 2011 02:17:58 +0000
Subject: [PATCH] No relocation produces a SLEB or ULEB, make sure they are
 handled in MC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130181 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/MC/MCAssembler.cpp      |  4 +++-
 lib/MC/MCObjectStreamer.cpp | 22 ++++++++++++----------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index cbbc0aceec1..3c9487bffec 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -691,7 +691,9 @@ bool MCAssembler::RelaxInstruction(MCAsmLayout &Layout,
 bool MCAssembler::RelaxLEB(MCAsmLayout &Layout, MCLEBFragment &LF) {
   int64_t Value = 0;
   uint64_t OldSize = LF.getContents().size();
-  LF.getValue().EvaluateAsAbsolute(Value, Layout);
+  bool IsAbs = LF.getValue().EvaluateAsAbsolute(Value, Layout);
+  (void)IsAbs;
+  assert(IsAbs);
   SmallString<8> &Data = LF.getContents();
   Data.clear();
   raw_svector_ostream OSE(Data);
diff --git a/lib/MC/MCObjectStreamer.cpp b/lib/MC/MCObjectStreamer.cpp
index cd18b007183..8beeeb78e50 100644
--- a/lib/MC/MCObjectStreamer.cpp
+++ b/lib/MC/MCObjectStreamer.cpp
@@ -124,12 +124,23 @@ void MCObjectStreamer::EmitLabel(MCSymbol *Symbol) {
   SD.setOffset(F->getContents().size());
 }
 
+static const MCExpr *ForceExpAbs(MCObjectStreamer *Streamer,
+                                  MCContext &Context, const MCExpr* Expr) {
+ if (Context.getAsmInfo().hasAggressiveSymbolFolding())
+   return Expr;
+
+ MCSymbol *ABS = Context.CreateTempSymbol();
+ Streamer->EmitAssignment(ABS, Expr);
+ return MCSymbolRefExpr::Create(ABS, Context);
+}
+
 void MCObjectStreamer::EmitULEB128Value(const MCExpr *Value) {
   int64_t IntValue;
   if (Value->EvaluateAsAbsolute(IntValue, getAssembler())) {
     EmitULEB128IntValue(IntValue);
     return;
   }
+  Value = ForceExpAbs(this, getContext(), Value);
   new MCLEBFragment(*Value, false, getCurrentSectionData());
 }
 
@@ -139,6 +150,7 @@ void MCObjectStreamer::EmitSLEB128Value(const MCExpr *Value) {
     EmitSLEB128IntValue(IntValue);
     return;
   }
+  Value = ForceExpAbs(this, getContext(), Value);
   new MCLEBFragment(*Value, true, getCurrentSectionData());
 }
 
@@ -208,16 +220,6 @@ static const MCExpr *BuildSymbolDiff(MCContext &Context,
   return AddrDelta;
 }
 
-static const MCExpr *ForceExpAbs(MCObjectStreamer *Streamer,
-                                  MCContext &Context, const MCExpr* Expr) {
- if (Context.getAsmInfo().hasAggressiveSymbolFolding())
-   return Expr;
-
- MCSymbol *ABS = Context.CreateTempSymbol();
- Streamer->EmitAssignment(ABS, Expr);
- return MCSymbolRefExpr::Create(ABS, Context);
-}
-
 void MCObjectStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
                                                 const MCSymbol *LastLabel,
                                                 const MCSymbol *Label) {