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[Qemu-devel] [PATCH 12/24] tcg-ppc64: Improve and_i32 with constant
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 12/24] tcg-ppc64: Improve and_i32 with constant |
Date: |
Mon, 18 Feb 2013 12:21:01 -0800 |
Use RLWINM
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/ppc64/tcg-target.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 49 insertions(+), 1 deletion(-)
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 9718ef6..ad6db6c 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -527,6 +527,48 @@ static void tcg_out_movi(TCGContext *s, TCGType type,
TCGReg ret,
}
}
+static inline bool mask_operand(uint32_t c, int *mb, int *me)
+{
+ uint32_t lsb, test;
+
+ /* Accept a bit pattern like:
+ 0....01....1
+ 1....10....0
+ 0..01..10..0
+ Keep track of the transitions. */
+ if (c == 0 || c == -1) {
+ return false;
+ }
+ test = c;
+ lsb = test & -test;
+ test += lsb;
+ if (test & (test - 1)) {
+ return false;
+ }
+
+ *me = clz32(lsb);
+ *mb = test ? clz32(test & -test) + 1 : 0;
+ return true;
+}
+
+static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
+{
+ int mb, me;
+
+ if ((c & 0xffff) == c) {
+ tcg_out32(s, ANDI | SAI(src, dst, c));
+ return;
+ } else if ((c & 0xffff0000) == c) {
+ tcg_out32(s, ANDIS | SAI(src, dst, c >> 16));
+ return;
+ } else if (mask_operand(c, &mb, &me)) {
+ tcg_out_rlw(s, RLWINM, dst, src, 0, mb, me);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_I32, 0, c);
+ tcg_out32(s, AND | SAB(src, dst, 0));
+ }
+}
+
static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c,
int op_lo, int op_hi)
{
@@ -1346,9 +1388,15 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc,
const TCGArg *args,
}
break;
- case INDEX_op_and_i64:
case INDEX_op_and_i32:
if (const_args[2]) {
+ tcg_out_andi32(s, args[0], args[1], args[2]);
+ } else {
+ tcg_out32(s, AND | SAB(args[1], args[0], args[2]));
+ }
+ break;
+ case INDEX_op_and_i64:
+ if (const_args[2]) {
if ((args[2] & 0xffff) == args[2]) {
tcg_out32(s, ANDI | SAI(args[1], args[0], args[2]));
} else if ((args[2] & 0xffff0000) == args[2]) {
--
1.8.1.2
- [Qemu-devel] [PATCH 05/24] tcg-ppc64: Introduce and use tcg_out_shli64, (continued)
- [Qemu-devel] [PATCH 05/24] tcg-ppc64: Introduce and use tcg_out_shli64, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 04/24] tcg-ppc64: Introduce and use tcg_out_ext32u, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 06/24] tcg-ppc64: Introduce and use tcg_out_shri64, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 03/24] tcg-ppc64: Introduce and use tcg_out_rlw, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 07/24] tcg-ppc64: Cleanup tcg_out_movi, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 08/24] tcg-ppc64: Introduce and use TAI and SAI, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 09/24] tcg-ppc64: Rearrange integer constant constraints, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 11/24] tcg-ppc64: Tidy or and xor patterns., Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 13/24] tcg-ppc64: Improve and_i64 with constant, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 16/24] tcg-ppc64: Implement bswap16 and bswap32, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 12/24] tcg-ppc64: Improve and_i32 with constant,
Richard Henderson <=
- [Qemu-devel] [PATCH 10/24] tcg-ppc64: Improve constant add and sub ops., Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 17/24] tcg-ppc64: Implement bswap64, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 14/24] tcg-ppc64: Streamline qemu_ld/st insn selection, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 15/24] tcg-ppc64: Implement rotates, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 22/24] tcg-ppc64: Rewrite setcond, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 19/24] tcg-ppc64: Implement deposit, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 20/24] tcg-ppc64: Use I constraint for mul, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 18/24] tcg-ppc64: Implement compound logicals, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 21/24] tcg-ppc64: Use TCGType throughout compares, Richard Henderson, 2013/02/18
- [Qemu-devel] [PATCH 24/24] tcg-ppc64: Use getauxval for ISA detection, Richard Henderson, 2013/02/18