Add a new MachineJumpTableInfo entry type, EK_GPRel64BlockAddress, which is

needed to emit a 64-bit gp-relative relocation entry. Make changes necessary
for emitting jump tables which have entries with directive .gpdword. This patch
does not implement the parts needed for direct object emission or JIT.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149668 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 19 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineJumpTableInfo.h b/include/llvm/CodeGen/MachineJumpTableInfo.h
index 6264349..6bd6682 100644
--- a/include/llvm/CodeGen/MachineJumpTableInfo.h
+++ b/include/llvm/CodeGen/MachineJumpTableInfo.h
@@ -47,7 +47,12 @@ public:
     /// EK_BlockAddress - Each entry is a plain address of block, e.g.:
     ///     .word LBB123
     EK_BlockAddress,
-    
+
+    /// EK_GPRel64BlockAddress - Each entry is an address of block, encoded
+    /// with a relocation as gp-relative, e.g.:
+    ///     .gpdword LBB123
+    EK_GPRel64BlockAddress,
+
     /// EK_GPRel32BlockAddress - Each entry is an address of block, encoded
     /// with a relocation as gp-relative, e.g.:
     ///     .gprel32 LBB123
diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h
index 5accabc..5027a8f 100644
--- a/include/llvm/MC/MCAsmInfo.h
+++ b/include/llvm/MC/MCAsmInfo.h
@@ -180,6 +180,11 @@ namespace llvm {
     const char *JT32Begin;                   // Defaults to "$a."
     bool SupportsDataRegions;
 
+    /// GPRel64Directive - if non-null, a directive that is used to emit a word
+    /// which should be relocated as a 64-bit GP-relative offset, e.g. .gpdword
+    /// on Mips.
+    const char *GPRel64Directive;            // Defaults to NULL.
+
     /// GPRel32Directive - if non-null, a directive that is used to emit a word
     /// which should be relocated as a 32-bit GP-relative offset, e.g. .gpword
     /// on Mips or .gprel32 on Alpha.
@@ -376,6 +381,7 @@ namespace llvm {
     const char *getData64bitsDirective(unsigned AS = 0) const {
       return AS == 0 ? Data64bitsDirective : getDataASDirective(64, AS);
     }
+    const char *getGPRel64Directive() const { return GPRel64Directive; }
     const char *getGPRel32Directive() const { return GPRel32Directive; }
 
     /// [Code|Data]Begin label name accessors.
diff --git a/include/llvm/MC/MCStreamer.h b/include/llvm/MC/MCStreamer.h
index c141dfb..9932306 100644
--- a/include/llvm/MC/MCStreamer.h
+++ b/include/llvm/MC/MCStreamer.h
@@ -441,6 +441,13 @@ namespace llvm {
     void EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
                          unsigned AddrSpace = 0);
 
+    /// EmitGPRel64Value - Emit the expression @p Value into the output as a
+    /// gprel64 (64-bit GP relative) value.
+    ///
+    /// This is used to implement assembler directives such as .gpdword on
+    /// targets that support them.
+    virtual void EmitGPRel64Value(const MCExpr *Value);
+
     /// EmitGPRel32Value - Emit the expression @p Value into the output as a
     /// gprel32 (32-bit GP relative) value.
     ///