[mips][microMIPS] Implement BEQZ16 and BNEZ16 instructions

[oota-llvm.git] / lib / Target / Mips / MCTargetDesc / MipsAsmBackend.cpp

diff --git a/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp b/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
index efeb54d91b89f355cad91fe878bb4d5357287596..6670dc208552fdb363feee613c7879121c26bc90 100644 (file)
--- a/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp
@@ -103,6 +103,14 @@ static unsigned adjustFixupValue(const MCFixup &Fixup, uint64_t Value,
   case Mips::fixup_MICROMIPS_26_S1:
     Value >>= 1;
     break;
+  case Mips::fixup_MICROMIPS_PC7_S1:
+    Value -= 4;
+    // Forcing a signed division because Value can be negative.
+    Value = (int64_t) Value / 2;
+    // We now check if Value can be encoded as a 7-bit signed immediate.
+    if (!isIntN(7, Value) && Ctx)
+      Ctx->FatalError(Fixup.getLoc(), "out of range PC7 fixup");
+    break;
   case Mips::fixup_MICROMIPS_PC16_S1:
     Value -= 4;
     // Forcing a signed division because Value can be negative.
@@ -271,6 +279,7 @@ getFixupKindInfo(MCFixupKind Kind) const {
     { "fixup_MICROMIPS_HI16",    0,     16,   0 },
     { "fixup_MICROMIPS_LO16",    0,     16,   0 },
     { "fixup_MICROMIPS_GOT16",   0,     16,   0 },
+    { "fixup_MICROMIPS_PC7_S1",  0,      7,   MCFixupKindInfo::FKF_IsPCRel },
     { "fixup_MICROMIPS_PC16_S1", 0,     16,   MCFixupKindInfo::FKF_IsPCRel },
     { "fixup_MICROMIPS_CALL16",  0,     16,   0 },
     { "fixup_MICROMIPS_GOT_DISP",        0,     16,   0 },
@@ -334,6 +343,7 @@ getFixupKindInfo(MCFixupKind Kind) const {
     { "fixup_MICROMIPS_HI16",   16,     16,   0 },
     { "fixup_MICROMIPS_LO16",   16,     16,   0 },
     { "fixup_MICROMIPS_GOT16",  16,     16,   0 },
+    { "fixup_MICROMIPS_PC7_S1",  9,      7,   MCFixupKindInfo::FKF_IsPCRel },
     { "fixup_MICROMIPS_PC16_S1",16,     16,   MCFixupKindInfo::FKF_IsPCRel },
     { "fixup_MICROMIPS_CALL16", 16,     16,   0 },
     { "fixup_MICROMIPS_GOT_DISP",        16,     16,   0 },