[llvm] r176029 - Fix missing relocation for TLS addressing peephole optimization.

[Bill Schmidt]

Author: wschmidt
Date: Mon Feb 25 10:44:35 2013
New Revision: 176029

URL: http://llvm.org/viewvc/llvm-project?rev=176029&view=rev
Log:
Fix missing relocation for TLS addressing peephole optimization.

Report and fix due to Kai Nacke.  Testcase update by me.

Modified:
    llvm/trunk/include/llvm/Support/ELF.h
    llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp
    llvm/trunk/test/CodeGen/PowerPC/tls.ll

Modified: llvm/trunk/include/llvm/Support/ELF.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/ELF.h?rev=176029&r1=176028&r2=176029&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/ELF.h (original)
+++ llvm/trunk/include/llvm/Support/ELF.h Mon Feb 25 10:44:35 2013
@@ -483,6 +483,7 @@ enum {
   R_PPC64_TOC16_DS            = 63,
   R_PPC64_TOC16_LO_DS         = 64,
   R_PPC64_TLS                 = 67,
+  R_PPC64_TPREL16_LO          = 70,
   R_PPC64_DTPREL16_LO         = 75,
   R_PPC64_DTPREL16_HA         = 77,
   R_PPC64_GOT_TLSGD16_LO      = 80,

Modified: llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp?rev=176029&r1=176028&r2=176029&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp Mon Feb 25 10:44:35 2013
@@ -153,6 +153,9 @@ unsigned PPCELFObjectWriter::getRelocTyp
     case PPC::fixup_ppc_toc16:
       switch (Modifier) {
       default: llvm_unreachable("Unsupported Modifier");
+      case MCSymbolRefExpr::VK_PPC_TPREL16_LO:
+        Type = ELF::R_PPC64_TPREL16_LO;
+        break;
       case MCSymbolRefExpr::VK_PPC_DTPREL16_LO:
         Type = ELF::R_PPC64_DTPREL16_LO;
         break;

Modified: llvm/trunk/test/CodeGen/PowerPC/tls.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/tls.ll?rev=176029&r1=176028&r2=176029&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/tls.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/tls.ll Mon Feb 25 10:44:35 2013
@@ -1,16 +1,21 @@
 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64"
 target triple = "powerpc64-unknown-freebsd10.0"
-; RUN: llc -O0 < %s -march=ppc64 | FileCheck %s
+; RUN: llc -O0 < %s -march=ppc64 | FileCheck -check-prefix=OPT0 %s
+; RUN: llc -O1 < %s -march=ppc64 | FileCheck -check-prefix=OPT1 %s
 
 @a = thread_local global i32 0, align 4
 
-;CHECK:          localexec:
+;OPT0:          localexec:
+;OPT1:          localexec:
 define i32 @localexec() nounwind {
 entry:
-;CHECK:          addis [[REG1:[0-9]+]], 13, a at tprel@ha
-;CHECK-NEXT:     li [[REG2:[0-9]+]], 42
-;CHECK-NEXT:     addi [[REG1]], [[REG1]], a at tprel@l
-;CHECK-NEXT:     stw [[REG2]], 0([[REG1]])
+;OPT0:          addis [[REG1:[0-9]+]], 13, a at tprel@ha
+;OPT0-NEXT:     li [[REG2:[0-9]+]], 42
+;OPT0-NEXT:     addi [[REG1]], [[REG1]], a at tprel@l
+;OPT0-NEXT:     stw [[REG2]], 0([[REG1]])
+;OPT1:          addis [[REG1:[0-9]+]], 13, a at tprel@ha
+;OPT1-NEXT:     li [[REG2:[0-9]+]], 42
+;OPT1-NEXT:     stw [[REG2]], a at tprel@l([[REG1]])
   store i32 42, i32* @a, align 4
   ret i32 0
 }