[Sparc] Emit large negative adjustments to SP/FP with sethi+xor instead of sethi+or. This generates correct code for both sparc32 and sparc64.

llvm-svn: 195576

1 files changed, 17 insertions, 0 deletions

diff --git a/llvm/lib/Target/Sparc/Sparc.h b/llvm/lib/Target/Sparc/Sparc.h
index f2d632e54c0..f44b60420d0 100644
--- a/llvm/lib/Target/Sparc/Sparc.h
+++ b/llvm/lib/Target/Sparc/Sparc.h
@@ -105,5 +105,22 @@ namespace llvm {
     }
     llvm_unreachable("Invalid cond code");
   }
+
+  inline static unsigned HI22(int64_t imm) {
+    return (unsigned)((imm >> 10) & ((1 << 22)-1));
+  }
+
+  inline static unsigned LO10(int64_t imm) {
+    return (unsigned)(imm & 0x3FF);
+  }
+
+  inline static unsigned HIX22(int64_t imm) {
+    return HI22(~imm);
+  }
+
+  inline static unsigned LOX10(int64_t imm) {
+    return ~LO10(~imm);
+  }
+
 }  // end namespace llvm
 #endif