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[PULL 46/63] tcg/ppc: Use power10 byte-reverse instructions
From: |
Richard Henderson |
Subject: |
[PULL 46/63] tcg/ppc: Use power10 byte-reverse instructions |
Date: |
Tue, 29 Jun 2021 11:54:38 -0700 |
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 33f0139519..e0f4665213 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -413,6 +413,10 @@ static bool tcg_target_const_match(int64_t val, TCGType
type, int ct)
#define SRAD XO31(794)
#define SRADI XO31(413<<1)
+#define BRH XO31(219)
+#define BRW XO31(155)
+#define BRD XO31(187)
+
#define TW XO31( 4)
#define TRAP (TW | TO(31))
@@ -748,6 +752,11 @@ static inline void tcg_out_ext16s(TCGContext *s, TCGReg
dst, TCGReg src)
tcg_out32(s, EXTSH | RA(dst) | RS(src));
}
+static inline void tcg_out_ext16u(TCGContext *s, TCGReg dst, TCGReg src)
+{
+ tcg_out32(s, ANDI | SAI(src, dst, 0xffff));
+}
+
static inline void tcg_out_ext32s(TCGContext *s, TCGReg dst, TCGReg src)
{
tcg_out32(s, EXTSW | RA(dst) | RS(src));
@@ -793,6 +802,16 @@ static void tcg_out_bswap16(TCGContext *s, TCGReg dst,
TCGReg src, int flags)
{
TCGReg tmp = dst == src ? TCG_REG_R0 : dst;
+ if (have_isa_3_10) {
+ tcg_out32(s, BRH | RA(dst) | RS(src));
+ if (flags & TCG_BSWAP_OS) {
+ tcg_out_ext16s(s, dst, dst);
+ } else if ((flags & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) {
+ tcg_out_ext16u(s, dst, dst);
+ }
+ return;
+ }
+
/*
* In the following,
* dep(a, b, m) -> (a & ~m) | (b & m)
@@ -815,6 +834,16 @@ static void tcg_out_bswap32(TCGContext *s, TCGReg dst,
TCGReg src, int flags)
{
TCGReg tmp = dst == src ? TCG_REG_R0 : dst;
+ if (have_isa_3_10) {
+ tcg_out32(s, BRW | RA(dst) | RS(src));
+ if (flags & TCG_BSWAP_OS) {
+ tcg_out_ext32s(s, dst, dst);
+ } else if ((flags & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) {
+ tcg_out_ext32u(s, dst, dst);
+ }
+ return;
+ }
+
/*
* Stolen from gcc's builtin_bswap32.
* In the following,
@@ -841,6 +870,11 @@ static void tcg_out_bswap64(TCGContext *s, TCGReg dst,
TCGReg src)
TCGReg t0 = dst == src ? TCG_REG_R0 : dst;
TCGReg t1 = dst == src ? dst : TCG_REG_R0;
+ if (have_isa_3_10) {
+ tcg_out32(s, BRD | RA(dst) | RS(src));
+ return;
+ }
+
/*
* In the following,
* dep(a, b, m) -> (a & ~m) | (b & m)
--
2.25.1
- [PULL 37/63] tcg/aarch64: Merge tcg_out_rev{16,32,64}, (continued)
- [PULL 37/63] tcg/aarch64: Merge tcg_out_rev{16,32,64}, Richard Henderson, 2021/06/29
- [PULL 40/63] tcg/ppc: Split out tcg_out_ext{8,16,32}s, Richard Henderson, 2021/06/29
- [PULL 41/63] tcg/ppc: Split out tcg_out_sari{32,64}, Richard Henderson, 2021/06/29
- [PULL 45/63] tcg/ppc: Support bswap flags, Richard Henderson, 2021/06/29
- [PULL 42/63] tcg/ppc: Split out tcg_out_bswap16, Richard Henderson, 2021/06/29
- [PULL 43/63] tcg/ppc: Split out tcg_out_bswap32, Richard Henderson, 2021/06/29
- [PULL 44/63] tcg/ppc: Split out tcg_out_bswap64, Richard Henderson, 2021/06/29
- [PULL 48/63] tcg/mips: Support bswap flags in tcg_out_bswap16, Richard Henderson, 2021/06/29
- [PULL 47/63] tcg/s390: Support bswap flags, Richard Henderson, 2021/06/29
- [PULL 49/63] tcg/mips: Support bswap flags in tcg_out_bswap32, Richard Henderson, 2021/06/29
- [PULL 46/63] tcg/ppc: Use power10 byte-reverse instructions,
Richard Henderson <=
- [PULL 52/63] tcg: Add flags argument to tcg_gen_bswap16_*, tcg_gen_bswap32_i64, Richard Henderson, 2021/06/29
- [PULL 51/63] tcg: Handle new bswap flags during optimize, Richard Henderson, 2021/06/29
- [PULL 54/63] tcg: Make use of bswap flags in tcg_gen_qemu_st_*, Richard Henderson, 2021/06/29
- [PULL 50/63] tcg/tci: Support bswap flags, Richard Henderson, 2021/06/29
- [PULL 53/63] tcg: Make use of bswap flags in tcg_gen_qemu_ld_*, Richard Henderson, 2021/06/29
- [PULL 57/63] target/arm: Improve REVSH, Richard Henderson, 2021/06/29
- [PULL 59/63] target/sh4: Improve swap.b translation, Richard Henderson, 2021/06/29
- [PULL 56/63] target/arm: Improve vector REV, Richard Henderson, 2021/06/29
- [PULL 58/63] target/i386: Improve bswap translation, Richard Henderson, 2021/06/29
- [PULL 62/63] tcg/aarch64: Unset TCG_TARGET_HAS_MEMORY_BSWAP, Richard Henderson, 2021/06/29