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-rw-r--r--tcg/README5
-rw-r--r--tcg/aarch64/tcg-target.h1
-rw-r--r--tcg/i386/tcg-target.h1
-rw-r--r--tcg/ia64/tcg-target.h1
-rw-r--r--tcg/optimize.c16
-rw-r--r--tcg/ppc64/tcg-target.h1
-rw-r--r--tcg/s390/tcg-target.h1
-rw-r--r--tcg/sparc/tcg-target.h1
-rw-r--r--tcg/tcg-op.h50
-rw-r--r--tcg/tcg-opc.h4
-rw-r--r--tcg/tcg.h1
-rw-r--r--tcg/tci/tcg-target.h1
12 files changed, 67 insertions, 16 deletions
diff --git a/tcg/README b/tcg/README
index 776e9259e3..a550ff176d 100644
--- a/tcg/README
+++ b/tcg/README
@@ -314,6 +314,11 @@ This operation would be equivalent to
dest = (t1 & ~0x0f00) | ((t2 << 8) & 0x0f00)
+* trunc_shr_i32 t0, t1, pos
+
+For 64-bit hosts only, right shift the 64-bit input T1 by POS and
+truncate to 32-bit output T0. Depending on the host, this may be
+a simple mov/shift, or may require additional canonicalization.
********* Conditional moves
diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h
index eff1d68fc6..a1d4322165 100644
--- a/tcg/aarch64/tcg-target.h
+++ b/tcg/aarch64/tcg-target.h
@@ -68,6 +68,7 @@ typedef enum {
#define TCG_TARGET_HAS_muls2_i32 0
#define TCG_TARGET_HAS_muluh_i32 0
#define TCG_TARGET_HAS_mulsh_i32 0
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div_i64 1
#define TCG_TARGET_HAS_rem_i64 1
diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h
index ababca0569..dbeb16d3ac 100644
--- a/tcg/i386/tcg-target.h
+++ b/tcg/i386/tcg-target.h
@@ -99,6 +99,7 @@ extern bool have_bmi1;
#define TCG_TARGET_HAS_mulsh_i32 0
#if TCG_TARGET_REG_BITS == 64
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div2_i64 1
#define TCG_TARGET_HAS_rot_i64 1
#define TCG_TARGET_HAS_ext8s_i64 1
diff --git a/tcg/ia64/tcg-target.h b/tcg/ia64/tcg-target.h
index 09c3ba8fe3..d834beb323 100644
--- a/tcg/ia64/tcg-target.h
+++ b/tcg/ia64/tcg-target.h
@@ -152,6 +152,7 @@ typedef enum {
#define TCG_TARGET_HAS_muluh_i64 0
#define TCG_TARGET_HAS_mulsh_i32 0
#define TCG_TARGET_HAS_mulsh_i64 0
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_new_ldst 1
diff --git a/tcg/optimize.c b/tcg/optimize.c
index c447062ab1..0302f4f99a 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -228,6 +228,7 @@ static TCGArg do_constant_folding_2(TCGOpcode op, TCGArg x, TCGArg y)
case INDEX_op_shr_i32:
return (uint32_t)x >> (y & 31);
+ case INDEX_op_trunc_shr_i32:
case INDEX_op_shr_i64:
return (uint64_t)x >> (y & 63);
@@ -830,6 +831,10 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
}
break;
+ case INDEX_op_trunc_shr_i32:
+ mask = (uint64_t)temps[args[1]].mask >> args[2];
+ break;
+
CASE_OP_32_64(shl):
if (temps[args[2]].state == TCG_TEMP_CONST) {
tmp = temps[args[2]].val & (TCG_TARGET_REG_BITS - 1);
@@ -1021,6 +1026,17 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
}
goto do_default;
+ case INDEX_op_trunc_shr_i32:
+ if (temps[args[1]].state == TCG_TEMP_CONST) {
+ s->gen_opc_buf[op_index] = op_to_movi(op);
+ tmp = do_constant_folding(op, temps[args[1]].val, args[2]);
+ tcg_opt_gen_movi(gen_args, args[0], tmp);
+ gen_args += 2;
+ args += 3;
+ break;
+ }
+ goto do_default;
+
CASE_OP_32_64(add):
CASE_OP_32_64(sub):
CASE_OP_32_64(mul):
diff --git a/tcg/ppc64/tcg-target.h b/tcg/ppc64/tcg-target.h
index 78bbf7a34a..3815b840a6 100644
--- a/tcg/ppc64/tcg-target.h
+++ b/tcg/ppc64/tcg-target.h
@@ -96,6 +96,7 @@ typedef enum {
#define TCG_TARGET_HAS_muls2_i32 0
#define TCG_TARGET_HAS_muluh_i32 0
#define TCG_TARGET_HAS_mulsh_i32 0
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div_i64 1
#define TCG_TARGET_HAS_rem_i64 0
diff --git a/tcg/s390/tcg-target.h b/tcg/s390/tcg-target.h
index b3bfdcc22c..755c00237e 100644
--- a/tcg/s390/tcg-target.h
+++ b/tcg/s390/tcg-target.h
@@ -69,6 +69,7 @@ typedef enum TCGReg {
#define TCG_TARGET_HAS_muls2_i32 0
#define TCG_TARGET_HAS_muluh_i32 0
#define TCG_TARGET_HAS_mulsh_i32 0
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div2_i64 1
#define TCG_TARGET_HAS_rot_i64 1
diff --git a/tcg/sparc/tcg-target.h b/tcg/sparc/tcg-target.h
index 4519c64ae9..f44739fd0d 100644
--- a/tcg/sparc/tcg-target.h
+++ b/tcg/sparc/tcg-target.h
@@ -117,6 +117,7 @@ typedef enum {
#define TCG_TARGET_HAS_mulsh_i32 0
#if TCG_TARGET_REG_BITS == 64
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div_i64 1
#define TCG_TARGET_HAS_rem_i64 0
#define TCG_TARGET_HAS_rot_i64 0
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
index 6b8ee5dac5..6dbbb38838 100644
--- a/tcg/tcg-op.h
+++ b/tcg/tcg-op.h
@@ -1624,9 +1624,20 @@ static inline void tcg_gen_ext32u_i64(TCGv_i64 ret, TCGv_i64 arg)
tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
}
-static inline void tcg_gen_trunc_i64_i32(TCGv_i32 ret, TCGv_i64 arg)
+static inline void tcg_gen_trunc_shr_i64_i32(TCGv_i32 ret, TCGv_i64 arg,
+ unsigned int count)
{
- tcg_gen_mov_i32(ret, TCGV_LOW(arg));
+ tcg_debug_assert(count < 64);
+ if (count >= 32) {
+ tcg_gen_shri_i32(ret, TCGV_HIGH(arg), count - 32);
+ } else if (count == 0) {
+ tcg_gen_mov_i32(ret, TCGV_LOW(arg));
+ } else {
+ TCGv_i64 t = tcg_temp_new_i64();
+ tcg_gen_shri_i64(t, arg, count);
+ tcg_gen_mov_i32(ret, TCGV_LOW(t));
+ tcg_temp_free_i64(t);
+ }
}
static inline void tcg_gen_extu_i32_i64(TCGv_i64 ret, TCGv_i32 arg)
@@ -1727,11 +1738,21 @@ static inline void tcg_gen_ext32u_i64(TCGv_i64 ret, TCGv_i64 arg)
}
}
-/* Note: we assume the target supports move between 32 and 64 bit
- registers. This will probably break MIPS64 targets. */
-static inline void tcg_gen_trunc_i64_i32(TCGv_i32 ret, TCGv_i64 arg)
+static inline void tcg_gen_trunc_shr_i64_i32(TCGv_i32 ret, TCGv_i64 arg,
+ unsigned int count)
{
- tcg_gen_mov_i32(ret, MAKE_TCGV_I32(GET_TCGV_I64(arg)));
+ tcg_debug_assert(count < 64);
+ if (TCG_TARGET_HAS_trunc_shr_i32) {
+ tcg_gen_op3i_i32(INDEX_op_trunc_shr_i32, ret,
+ MAKE_TCGV_I32(GET_TCGV_I64(arg)), count);
+ } else if (count == 0) {
+ tcg_gen_mov_i32(ret, MAKE_TCGV_I32(GET_TCGV_I64(arg)));
+ } else {
+ TCGv_i64 t = tcg_temp_new_i64();
+ tcg_gen_shri_i64(t, arg, count);
+ tcg_gen_mov_i32(ret, MAKE_TCGV_I32(GET_TCGV_I64(t)));
+ tcg_temp_free_i64(t);
+ }
}
/* Note: we assume the target supports move between 32 and 64 bit
@@ -2275,18 +2296,15 @@ static inline void tcg_gen_concat32_i64(TCGv_i64 dest, TCGv_i64 low,
tcg_gen_deposit_i64(dest, low, high, 32, 32);
}
+static inline void tcg_gen_trunc_i64_i32(TCGv_i32 ret, TCGv_i64 arg)
+{
+ tcg_gen_trunc_shr_i64_i32(ret, arg, 0);
+}
+
static inline void tcg_gen_extr_i64_i32(TCGv_i32 lo, TCGv_i32 hi, TCGv_i64 arg)
{
-#if TCG_TARGET_REG_BITS == 32
- tcg_gen_mov_i32(lo, TCGV_LOW(arg));
- tcg_gen_mov_i32(hi, TCGV_HIGH(arg));
-#else
- TCGv_i64 t0 = tcg_temp_new_i64();
- tcg_gen_trunc_i64_i32(lo, arg);
- tcg_gen_shri_i64(t0, arg, 32);
- tcg_gen_trunc_i64_i32(hi, t0);
- tcg_temp_free_i64(t0);
-#endif
+ tcg_gen_trunc_shr_i64_i32(lo, arg, 0);
+ tcg_gen_trunc_shr_i64_i32(hi, arg, 32);
}
static inline void tcg_gen_extr32_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i64 arg)
diff --git a/tcg/tcg-opc.h b/tcg/tcg-opc.h
index d71707d9bb..adb6ce1bb9 100644
--- a/tcg/tcg-opc.h
+++ b/tcg/tcg-opc.h
@@ -147,6 +147,10 @@ DEF(rotl_i64, 1, 2, 0, IMPL64 | IMPL(TCG_TARGET_HAS_rot_i64))
DEF(rotr_i64, 1, 2, 0, IMPL64 | IMPL(TCG_TARGET_HAS_rot_i64))
DEF(deposit_i64, 1, 2, 2, IMPL64 | IMPL(TCG_TARGET_HAS_deposit_i64))
+DEF(trunc_shr_i32, 1, 1, 1,
+ IMPL(TCG_TARGET_HAS_trunc_shr_i32)
+ | (TCG_TARGET_REG_BITS == 32 ? TCG_OPF_NOT_PRESENT : 0))
+
DEF(brcond_i64, 0, 2, 2, TCG_OPF_BB_END | IMPL64)
DEF(ext8s_i64, 1, 1, 0, IMPL64 | IMPL(TCG_TARGET_HAS_ext8s_i64))
DEF(ext16s_i64, 1, 1, 0, IMPL64 | IMPL(TCG_TARGET_HAS_ext16s_i64))
diff --git a/tcg/tcg.h b/tcg/tcg.h
index 0bb66775a5..a6a2d06080 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -66,6 +66,7 @@ typedef uint64_t TCGRegSet;
#if TCG_TARGET_REG_BITS == 32
/* Turn some undef macros into false macros. */
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div_i64 0
#define TCG_TARGET_HAS_rem_i64 0
#define TCG_TARGET_HAS_div2_i64 0
diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h
index f43492cc67..37719e875c 100644
--- a/tcg/tci/tcg-target.h
+++ b/tcg/tci/tcg-target.h
@@ -82,6 +82,7 @@
#define TCG_TARGET_HAS_mulsh_i32 0
#if TCG_TARGET_REG_BITS == 64
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_bswap16_i64 1
#define TCG_TARGET_HAS_bswap32_i64 1
#define TCG_TARGET_HAS_bswap64_i64 1
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-03 11:35:31 +0000