Revert 23028 - "MIPS: Add support for arch. revision 6 to mips32 port."

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index 5cdf16ac4ae8435fca6b327e191f446de1c4ca33..8469c1ca182b883a0a1c36a103f85a98a459e5f8 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -328,8 +328,6 @@ const FPURegister f31 = { 31 };
 #define kLithiumScratchReg2 s4
 #define kLithiumScratchDouble f30
 #define kDoubleRegZero f28
-// Used on mips32r6 for compare operations.
-#define kDoubleCompareReg f31
 
 // FPU (coprocessor 1) control registers.
 // Currently only FCSR (#31) is implemented.
@@ -467,20 +465,11 @@ class Assembler : public AssemblerBase {
   // position. Links the label to the current position if it is still unbound.
   // Manages the jump elimination optimization if the second parameter is true.
   int32_t branch_offset(Label* L, bool jump_elimination_allowed);
-  int32_t branch_offset_compact(Label* L, bool jump_elimination_allowed);
-  int32_t branch_offset21(Label* L, bool jump_elimination_allowed);
-  int32_t branch_offset21_compact(Label* L, bool jump_elimination_allowed);
   int32_t shifted_branch_offset(Label* L, bool jump_elimination_allowed) {
     int32_t o = branch_offset(L, jump_elimination_allowed);
     DCHECK((o & 3) == 0);   // Assert the offset is aligned.
     return o >> 2;
   }
-  int32_t shifted_branch_offset_compact(Label* L,
-      bool jump_elimination_allowed) {
-    int32_t o = branch_offset_compact(L, jump_elimination_allowed);
-    DCHECK((o & 3) == 0);   // Assert the offset is aligned.
-    return o >> 2;
-  }
   uint32_t jump_address(Label* L);
 
   // Puts a labels target address at the given position.
@@ -638,99 +627,15 @@ class Assembler : public AssemblerBase {
     beq(rs, rt, branch_offset(L, false) >> 2);
   }
   void bgez(Register rs, int16_t offset);
-  void bgezc(Register rt, int16_t offset);
-  void bgezc(Register rt, Label* L) {
-    bgezc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void bgeuc(Register rs, Register rt, int16_t offset);
-  void bgeuc(Register rs, Register rt, Label* L) {
-    bgeuc(rs, rt, branch_offset_compact(L, false)>>2);
-  }
-  void bgec(Register rs, Register rt, int16_t offset);
-  void bgec(Register rs, Register rt, Label* L) {
-    bgec(rs, rt, branch_offset_compact(L, false)>>2);
-  }
   void bgezal(Register rs, int16_t offset);
-  void bgezalc(Register rt, int16_t offset);
-  void bgezalc(Register rt, Label* L) {
-    bgezalc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void bgezall(Register rs, int16_t offset);
-  void bgezall(Register rs, Label* L) {
-    bgezall(rs, branch_offset(L, false)>>2);
-  }
   void bgtz(Register rs, int16_t offset);
-  void bgtzc(Register rt, int16_t offset);
-  void bgtzc(Register rt, Label* L) {
-    bgtzc(rt, branch_offset_compact(L, false)>>2);
-  }
   void blez(Register rs, int16_t offset);
-  void blezc(Register rt, int16_t offset);
-  void blezc(Register rt, Label* L) {
-    blezc(rt, branch_offset_compact(L, false)>>2);
-  }
   void bltz(Register rs, int16_t offset);
-  void bltzc(Register rt, int16_t offset);
-  void bltzc(Register rt, Label* L) {
-    bltzc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void bltuc(Register rs, Register rt, int16_t offset);
-  void bltuc(Register rs, Register rt, Label* L) {
-    bltuc(rs, rt, branch_offset_compact(L, false)>>2);
-  }
-  void bltc(Register rs, Register rt, int16_t offset);
-  void bltc(Register rs, Register rt, Label* L) {
-    bltc(rs, rt, branch_offset_compact(L, false)>>2);
-  }
   void bltzal(Register rs, int16_t offset);
-  void blezalc(Register rt, int16_t offset);
-  void blezalc(Register rt, Label* L) {
-    blezalc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void bltzalc(Register rt, int16_t offset);
-  void bltzalc(Register rt, Label* L) {
-    bltzalc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void bgtzalc(Register rt, int16_t offset);
-  void bgtzalc(Register rt, Label* L) {
-    bgtzalc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void beqzalc(Register rt, int16_t offset);
-  void beqzalc(Register rt, Label* L) {
-    beqzalc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void beqc(Register rs, Register rt, int16_t offset);
-  void beqc(Register rs, Register rt, Label* L) {
-    beqc(rs, rt, branch_offset_compact(L, false)>>2);
-  }
-  void beqzc(Register rs, int32_t offset);
-  void beqzc(Register rs, Label* L) {
-    beqzc(rs, branch_offset21_compact(L, false)>>2);
-  }
-  void bnezalc(Register rt, int16_t offset);
-  void bnezalc(Register rt, Label* L) {
-    bnezalc(rt, branch_offset_compact(L, false)>>2);
-  }
-  void bnec(Register rs, Register rt, int16_t offset);
-  void bnec(Register rs, Register rt, Label* L) {
-    bnec(rs, rt, branch_offset_compact(L, false)>>2);
-  }
-  void bnezc(Register rt, int32_t offset);
-  void bnezc(Register rt, Label* L) {
-    bnezc(rt, branch_offset21_compact(L, false)>>2);
-  }
   void bne(Register rs, Register rt, int16_t offset);
   void bne(Register rs, Register rt, Label* L) {
     bne(rs, rt, branch_offset(L, false)>>2);
   }
-  void bovc(Register rs, Register rt, int16_t offset);
-  void bovc(Register rs, Register rt, Label* L) {
-    bovc(rs, rt, branch_offset_compact(L, false)>>2);
-  }
-  void bnvc(Register rs, Register rt, int16_t offset);
-  void bnvc(Register rs, Register rt, Label* L) {
-    bnvc(rs, rt, branch_offset_compact(L, false)>>2);
-  }
 
   // Never use the int16_t b(l)cond version with a branch offset
   // instead of using the Label* version.
@@ -753,14 +658,7 @@ class Assembler : public AssemblerBase {
   void multu(Register rs, Register rt);
   void div(Register rs, Register rt);
   void divu(Register rs, Register rt);
-  void div(Register rd, Register rs, Register rt);
-  void divu(Register rd, Register rs, Register rt);
-  void mod(Register rd, Register rs, Register rt);
-  void modu(Register rd, Register rs, Register rt);
   void mul(Register rd, Register rs, Register rt);
-  void muh(Register rd, Register rs, Register rt);
-  void mulu(Register rd, Register rs, Register rt);
-  void muhu(Register rd, Register rs, Register rt);
 
   void addiu(Register rd, Register rs, int32_t j);
 
@@ -774,7 +672,6 @@ class Assembler : public AssemblerBase {
   void ori(Register rd, Register rs, int32_t j);
   void xori(Register rd, Register rs, int32_t j);
   void lui(Register rd, int32_t j);
-  void aui(Register rs, Register rt, int32_t j);
 
   // Shifts.
   // Please note: sll(zero_reg, zero_reg, x) instructions are reserved as nop
@@ -839,15 +736,6 @@ class Assembler : public AssemblerBase {
   void movt(Register rd, Register rs, uint16_t cc = 0);
   void movf(Register rd, Register rs, uint16_t cc = 0);
 
-  void sel(SecondaryField fmt, FPURegister fd, FPURegister ft,
-      FPURegister fs, uint8_t sel);
-  void seleqz(Register rs, Register rt, Register rd);
-  void seleqz(SecondaryField fmt, FPURegister fd, FPURegister ft,
-      FPURegister fs);
-  void selnez(Register rs, Register rt, Register rd);
-  void selnez(SecondaryField fmt, FPURegister fd, FPURegister ft,
-      FPURegister fs);
-
   // Bit twiddling.
   void clz(Register rd, Register rs);
   void ins_(Register rt, Register rs, uint16_t pos, uint16_t size);
@@ -863,10 +751,7 @@ class Assembler : public AssemblerBase {
   void sdc1(FPURegister fs, const MemOperand& dst);
 
   void mtc1(Register rt, FPURegister fs);
-  void mthc1(Register rt, FPURegister fs);
-
   void mfc1(Register rt, FPURegister fs);
-  void mfhc1(Register rt, FPURegister fs);
 
   void ctc1(Register rt, FPUControlRegister fs);
   void cfc1(Register rt, FPUControlRegister fs);
@@ -905,11 +790,6 @@ class Assembler : public AssemblerBase {
   void ceil_l_s(FPURegister fd, FPURegister fs);
   void ceil_l_d(FPURegister fd, FPURegister fs);
 
-  void min(SecondaryField fmt, FPURegister fd, FPURegister ft, FPURegister fs);
-  void mina(SecondaryField fmt, FPURegister fd, FPURegister ft, FPURegister fs);
-  void max(SecondaryField fmt, FPURegister fd, FPURegister ft, FPURegister fs);
-  void maxa(SecondaryField fmt, FPURegister fd, FPURegister ft, FPURegister fs);
-
   void cvt_s_w(FPURegister fd, FPURegister fs);
   void cvt_s_l(FPURegister fd, FPURegister fs);
   void cvt_s_d(FPURegister fd, FPURegister fs);
@@ -918,20 +798,7 @@ class Assembler : public AssemblerBase {
   void cvt_d_l(FPURegister fd, FPURegister fs);
   void cvt_d_s(FPURegister fd, FPURegister fs);
 
-  // Conditions and branches for MIPSr6.
-  void cmp(FPUCondition cond, SecondaryField fmt,
-         FPURegister fd, FPURegister ft, FPURegister fs);
-
-  void bc1eqz(int16_t offset, FPURegister ft);
-  void bc1eqz(Label* L, FPURegister ft) {
-    bc1eqz(branch_offset(L, false)>>2, ft);
-  }
-  void bc1nez(int16_t offset, FPURegister ft);
-  void bc1nez(Label* L, FPURegister ft) {
-    bc1nez(branch_offset(L, false)>>2, ft);
-  }
-
-  // Conditions and branches for non MIPSr6.
+  // Conditions and branches.
   void c(FPUCondition cond, SecondaryField fmt,
          FPURegister ft, FPURegister fs, uint16_t cc = 0);