[PowerPC] Fix incorrect PC Relative relocations for Big Endian

Fix the incorrect PC Relative relocations for Big Endian for 34 bit offsets.
The offset should be zero for both BE and LE in this situation.

Differential Revision: https://reviews.llvm.org/D81033

diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
index f5b1e91..017ee94 100644 (file)
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
@@ -113,7 +113,7 @@ PPCMCCodeEmitter::getImm34Encoding(const MCInst &MI, unsigned OpNo,
     return getMachineOpValue(MI, MO, Fixups, STI);
 
   // Add a fixup for the immediate field.
-  Fixups.push_back(MCFixup::create(IsLittleEndian? 0 : 1, MO.getExpr(),
+  Fixups.push_back(MCFixup::create(0, MO.getExpr(),
                                    (MCFixupKind)PPC::fixup_ppc_pcrel34));
   return 0;
 }
@@ -217,7 +217,7 @@ PPCMCCodeEmitter::getMemRI34PCRelEncoding(const MCInst &MI, unsigned OpNo,
            "VariantKind must be VK_PCREL or VK_PPC_GOT_PCREL");
     // Generate the fixup for the relocation.
     Fixups.push_back(
-        MCFixup::create(IsLittleEndian ? 0 : 1, Expr,
+        MCFixup::create(0, Expr,
                         static_cast<MCFixupKind>(PPC::fixup_ppc_pcrel34)));
     // There is no offset to return so just return 0.
     return 0;
@@ -249,7 +249,7 @@ PPCMCCodeEmitter::getMemRI34PCRelEncoding(const MCInst &MI, unsigned OpNo,
            "VariantKind must be VK_PCREL or VK_PPC_GOT_PCREL");
     // Generate the fixup for the relocation.
     Fixups.push_back(
-        MCFixup::create(IsLittleEndian ? 0 : 1, Expr,
+        MCFixup::create(0, Expr,
                         static_cast<MCFixupKind>(PPC::fixup_ppc_pcrel34)));
     assert(isInt<34>(CE->getValue()) && "Value must fit in 34 bits.");
     // Return the offset that should be added to the relocation by the linker.

diff --git a/llvm/test/MC/PowerPC/future-reloc.s b/llvm/test/MC/PowerPC/future-reloc.s
index 6dd7fea..e6d41b0 100644 (file)
--- a/llvm/test/MC/PowerPC/future-reloc.s
+++ b/llvm/test/MC/PowerPC/future-reloc.s
@@ -3,6 +3,11 @@
 # RUN: llvm-mc -triple=powerpc64le-unknown-unknown -filetype=obj %s | \
 # RUN: llvm-readobj -r | FileCheck %s -check-prefix=READOBJ
 
+# RUN: llvm-mc -triple=powerpc64-unknown-unknown -filetype=obj %s 2>&1 | \
+# RUN: FileCheck %s -check-prefix=MC
+# RUN: llvm-mc -triple=powerpc64-unknown-unknown -filetype=obj %s | \
+# RUN: llvm-readobj -r | FileCheck %s -check-prefix=READOBJ
+
 # This test checks that on Power PC we can correctly convert @pcrel and
 # @got@pcrel into R_PPC64_PCREL34 and R_PPC64_GOT_PCREL34.