[PATCH v3 31/38] tcg/ppc: Use cr0 in tcg_to_bc and tcg_to_isel

[Richard Henderson <richard.henderson@linaro.org>]

Using cr0 means we could choose to use rc=1 to compute the condition.
Adjust the tables and tcg_out_cmp that feeds them.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/ppc/tcg-target.c.inc | 68 ++++++++++++++++++++--------------------
 1 file changed, 34 insertions(+), 34 deletions(-)

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 830d2fe73a..b9323baa86 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -671,30 +671,30 @@ enum {
 };
 
 static const uint32_t tcg_to_bc[] = {
-    [TCG_COND_EQ]  = BC | BI(7, CR_EQ) | BO_COND_TRUE,
-    [TCG_COND_NE]  = BC | BI(7, CR_EQ) | BO_COND_FALSE,
-    [TCG_COND_LT]  = BC | BI(7, CR_LT) | BO_COND_TRUE,
-    [TCG_COND_GE]  = BC | BI(7, CR_LT) | BO_COND_FALSE,
-    [TCG_COND_LE]  = BC | BI(7, CR_GT) | BO_COND_FALSE,
-    [TCG_COND_GT]  = BC | BI(7, CR_GT) | BO_COND_TRUE,
-    [TCG_COND_LTU] = BC | BI(7, CR_LT) | BO_COND_TRUE,
-    [TCG_COND_GEU] = BC | BI(7, CR_LT) | BO_COND_FALSE,
-    [TCG_COND_LEU] = BC | BI(7, CR_GT) | BO_COND_FALSE,
-    [TCG_COND_GTU] = BC | BI(7, CR_GT) | BO_COND_TRUE,
+    [TCG_COND_EQ]  = BC | BI(0, CR_EQ) | BO_COND_TRUE,
+    [TCG_COND_NE]  = BC | BI(0, CR_EQ) | BO_COND_FALSE,
+    [TCG_COND_LT]  = BC | BI(0, CR_LT) | BO_COND_TRUE,
+    [TCG_COND_GE]  = BC | BI(0, CR_LT) | BO_COND_FALSE,
+    [TCG_COND_LE]  = BC | BI(0, CR_GT) | BO_COND_FALSE,
+    [TCG_COND_GT]  = BC | BI(0, CR_GT) | BO_COND_TRUE,
+    [TCG_COND_LTU] = BC | BI(0, CR_LT) | BO_COND_TRUE,
+    [TCG_COND_GEU] = BC | BI(0, CR_LT) | BO_COND_FALSE,
+    [TCG_COND_LEU] = BC | BI(0, CR_GT) | BO_COND_FALSE,
+    [TCG_COND_GTU] = BC | BI(0, CR_GT) | BO_COND_TRUE,
 };
 
 /* The low bit here is set if the RA and RB fields must be inverted.  */
 static const uint32_t tcg_to_isel[] = {
-    [TCG_COND_EQ]  = ISEL | BC_(7, CR_EQ),
-    [TCG_COND_NE]  = ISEL | BC_(7, CR_EQ) | 1,
-    [TCG_COND_LT]  = ISEL | BC_(7, CR_LT),
-    [TCG_COND_GE]  = ISEL | BC_(7, CR_LT) | 1,
-    [TCG_COND_LE]  = ISEL | BC_(7, CR_GT) | 1,
-    [TCG_COND_GT]  = ISEL | BC_(7, CR_GT),
-    [TCG_COND_LTU] = ISEL | BC_(7, CR_LT),
-    [TCG_COND_GEU] = ISEL | BC_(7, CR_LT) | 1,
-    [TCG_COND_LEU] = ISEL | BC_(7, CR_GT) | 1,
-    [TCG_COND_GTU] = ISEL | BC_(7, CR_GT),
+    [TCG_COND_EQ]  = ISEL | BC_(0, CR_EQ),
+    [TCG_COND_NE]  = ISEL | BC_(0, CR_EQ) | 1,
+    [TCG_COND_LT]  = ISEL | BC_(0, CR_LT),
+    [TCG_COND_GE]  = ISEL | BC_(0, CR_LT) | 1,
+    [TCG_COND_LE]  = ISEL | BC_(0, CR_GT) | 1,
+    [TCG_COND_GT]  = ISEL | BC_(0, CR_GT),
+    [TCG_COND_LTU] = ISEL | BC_(0, CR_LT),
+    [TCG_COND_GEU] = ISEL | BC_(0, CR_LT) | 1,
+    [TCG_COND_LEU] = ISEL | BC_(0, CR_GT) | 1,
+    [TCG_COND_GTU] = ISEL | BC_(0, CR_GT),
 };
 
 static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
@@ -1827,7 +1827,7 @@ static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
     if (have_isa_3_10) {
         tcg_insn_unit bi, opc;
 
-        tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
+        tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 0, type);
 
         /* Re-use tcg_to_bc for BI and BO_COND_{TRUE,FALSE}. */
         bi = tcg_to_bc[cond] & (0x1f << 16);
@@ -1880,7 +1880,7 @@ static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
     if (have_isel) {
         int isel, tab;
 
-        tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
+        tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 0, type);
 
         isel = tcg_to_isel[cond];
 
@@ -1966,7 +1966,7 @@ static void tcg_out_brcond(TCGContext *s, TCGCond cond,
                            TCGArg arg1, TCGArg arg2, int const_arg2,
                            TCGLabel *l, TCGType type)
 {
-    tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
+    tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 0, type);
     tcg_out_bc_lab(s, cond, l);
 }
 
@@ -1980,7 +1980,7 @@ static void tcg_out_movcond(TCGContext *s, TCGType type, TCGCond cond,
         return;
     }
 
-    tcg_out_cmp(s, cond, c1, c2, const_c2, 7, type);
+    tcg_out_cmp(s, cond, c1, c2, const_c2, 0, type);
 
     if (have_isel) {
         int isel = tcg_to_isel[cond];
@@ -2024,7 +2024,7 @@ static void tcg_out_cntxz(TCGContext *s, TCGType type, uint32_t opc,
     if (const_a2 && a2 == (type == TCG_TYPE_I32 ? 32 : 64)) {
         tcg_out32(s, opc | RA(a0) | RS(a1));
     } else {
-        tcg_out_cmp(s, TCG_COND_EQ, a1, 0, 1, 7, type);
+        tcg_out_cmp(s, TCG_COND_EQ, a1, 0, 1, 0, type);
         /* Note that the only other valid constant for a2 is 0.  */
         if (have_isel) {
             tcg_out32(s, opc | RA(TCG_REG_R0) | RS(a1));
@@ -2079,7 +2079,7 @@ static void tcg_out_cmp2(TCGContext *s, const TCGArg *args,
     do_equality:
         tcg_out_cmp(s, cond, al, bl, blconst, 6, TCG_TYPE_I32);
         tcg_out_cmp(s, cond, ah, bh, bhconst, 7, TCG_TYPE_I32);
-        tcg_out32(s, op | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
+        tcg_out32(s, op | BT(0, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
         break;
 
     case TCG_COND_LT:
@@ -2097,8 +2097,8 @@ static void tcg_out_cmp2(TCGContext *s, const TCGArg *args,
 
         tcg_out_cmp(s, cond, ah, bh, bhconst, 6, TCG_TYPE_I32);
         tcg_out_cmp(s, cond2, al, bl, blconst, 7, TCG_TYPE_I32);
-        tcg_out32(s, op | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, bit2));
-        tcg_out32(s, CROR | BT(7, CR_EQ) | BA(6, bit1) | BB(7, CR_EQ));
+        tcg_out32(s, op | BT(0, CR_EQ) | BA(6, CR_EQ) | BB(7, bit2));
+        tcg_out32(s, CROR | BT(0, CR_EQ) | BA(6, bit1) | BB(0, CR_EQ));
         break;
 
     default:
@@ -2110,8 +2110,8 @@ static void tcg_out_setcond2(TCGContext *s, const TCGArg *args,
                              const int *const_args)
 {
     tcg_out_cmp2(s, args + 1, const_args + 1);
-    tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7));
-    tcg_out_rlw(s, RLWINM, args[0], TCG_REG_R0, 31, 31, 31);
+    tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(0));
+    tcg_out_rlw(s, RLWINM, args[0], TCG_REG_R0, CR_EQ + 0*4 + 1, 31, 31);
 }
 
 static void tcg_out_brcond2(TCGContext *s, const TCGArg *args,
@@ -2442,12 +2442,12 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
             tcg_out_cmp(s, TCG_COND_EQ, addrhi, TCG_REG_TMP2,
                         0, 6, TCG_TYPE_I32);
 
-            /* Combine comparisons into cr7. */
-            tcg_out32(s, CRAND | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
+            /* Combine comparisons into cr0. */
+            tcg_out32(s, CRAND | BT(0, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
         } else {
-            /* Full comparison into cr7. */
+            /* Full comparison into cr0. */
             tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2,
-                        0, 7, addr_type);
+                        0, 0, addr_type);
         }
 
         /* Load a pointer into the current opcode w/conditional branch-link. */
-- 
2.34.1