[PULL 0/2] tcg patch queue
[PULL 0/4] tcg patch queue
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Dangit, PULL.
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Pretty small still, but there are two patches that ought
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to get backported to stable, so no point in delaying.
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3
3
r~
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r~
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On 2/13/24 15:25, Richard Henderson wrote:
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The following changes since commit a5ba0a7e4e150d1350a041f0d0ef9ca6c8d7c307:
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> The following changes since commit bc2e8b18fba33f30f25b7c2d74328493c0a2231d:
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>
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Merge tag 'pull-aspeed-20241211' of https://github.com/legoater/qemu into staging (2024-12-11 15:16:47 +0000)
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> Merge tag 'hppa64-pull-request' of https://github.com/hdeller/qemu-hppa into staging (2024-02-13 13:56:46 +0000)
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>
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are available in the Git repository at:
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> are available in the Git repository at:
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>
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https://gitlab.com/rth7680/qemu.git tags/pull-tcg-20241212
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> https://gitlab.com/rth7680/qemu.git tags/pull-tcg-20240213
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>
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for you to fetch changes up to 7ac87b14a92234b6a89b701b4043ad6cf8bdcccf:
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> for you to fetch changes up to e41f1825b43796c3508ef309ed0b150ef89acc44:
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>
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target/sparc: Use memcpy() and remove memcpy32() (2024-12-12 14:28:38 -0600)
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> tcg/arm: Fix goto_tb for large translation blocks (2024-02-13 07:42:45 -1000)
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>
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----------------------------------------------------------------
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> ----------------------------------------------------------------
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tcg: Reset free_temps before tcg_optimize
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> tcg: Increase width of temp_subindex
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tcg/riscv: Fix StoreStore barrier generation
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> tcg/arm: Fix goto_tb for large translation blocks
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include/exec: Introduce fpst alias in helper-head.h.inc
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>
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target/sparc: Use memcpy() and remove memcpy32()
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> ----------------------------------------------------------------
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> Richard Henderson (2):
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----------------------------------------------------------------
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> tcg: Increase width of temp_subindex
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Philippe Mathieu-Daudé (1):
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> tcg/arm: Fix goto_tb for large translation blocks
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target/sparc: Use memcpy() and remove memcpy32()
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>
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> include/tcg/tcg.h | 2 +-
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Richard Henderson (2):
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> tcg/arm/tcg-target.c.inc | 4 ++--
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tcg: Reset free_temps before tcg_optimize
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> 2 files changed, 3 insertions(+), 3 deletions(-)
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include/exec: Introduce fpst alias in helper-head.h.inc
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Roman Artemev (1):
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tcg/riscv: Fix StoreStore barrier generation
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include/tcg/tcg-temp-internal.h | 6 ++++++
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accel/tcg/plugin-gen.c | 2 +-
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target/sparc/win_helper.c | 26 ++++++++------------------
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tcg/tcg.c | 5 ++++-
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include/exec/helper-head.h.inc | 3 +++
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tcg/riscv/tcg-target.c.inc | 2 +-
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6 files changed, 23 insertions(+), 21 deletions(-)
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diff view generated by jsdifflib
New patch
[PULL 1/4] tcg: Reset free_temps before tcg_optimize
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When allocating new temps during tcg_optmize, do not re-use
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any EBB temps that were used within the TB. We do not have
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any idea what span of the TB in which the temp was live.
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4
5
Introduce tcg_temp_ebb_reset_freed and use before tcg_optimize,
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as well as replacing the equivalent in plugin_gen_inject and
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tcg_func_start.
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Cc: qemu-stable@nongnu.org
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Fixes: fb04ab7ddd8 ("tcg/optimize: Lower TCG_COND_TST{EQ,NE} if unsupported")
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Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2711
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Reported-by: wannacu <wannacu2049@gmail.com>
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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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---
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include/tcg/tcg-temp-internal.h | 6 ++++++
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accel/tcg/plugin-gen.c | 2 +-
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tcg/tcg.c | 5 ++++-
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3 files changed, 11 insertions(+), 2 deletions(-)
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diff --git a/include/tcg/tcg-temp-internal.h b/include/tcg/tcg-temp-internal.h
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index XXXXXXX..XXXXXXX 100644
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--- a/include/tcg/tcg-temp-internal.h
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+++ b/include/tcg/tcg-temp-internal.h
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@@ -XXX,XX +XXX,XX @@ TCGv_i64 tcg_temp_ebb_new_i64(void);
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TCGv_ptr tcg_temp_ebb_new_ptr(void);
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TCGv_i128 tcg_temp_ebb_new_i128(void);
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30
+/* Forget all freed EBB temps, so that new allocations produce new temps. */
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+static inline void tcg_temp_ebb_reset_freed(TCGContext *s)
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+{
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+ memset(s->free_temps, 0, sizeof(s->free_temps));
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+}
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+
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#endif /* TCG_TEMP_FREE_H */
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diff --git a/accel/tcg/plugin-gen.c b/accel/tcg/plugin-gen.c
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index XXXXXXX..XXXXXXX 100644
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--- a/accel/tcg/plugin-gen.c
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+++ b/accel/tcg/plugin-gen.c
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@@ -XXX,XX +XXX,XX @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb)
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* that might be live within the existing opcode stream.
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* The simplest solution is to release them all and create new.
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*/
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- memset(tcg_ctx->free_temps, 0, sizeof(tcg_ctx->free_temps));
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+ tcg_temp_ebb_reset_freed(tcg_ctx);
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QTAILQ_FOREACH_SAFE(op, &tcg_ctx->ops, link, next) {
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switch (op->opc) {
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diff --git a/tcg/tcg.c b/tcg/tcg.c
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index XXXXXXX..XXXXXXX 100644
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--- a/tcg/tcg.c
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+++ b/tcg/tcg.c
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@@ -XXX,XX +XXX,XX @@ void tcg_func_start(TCGContext *s)
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s->nb_temps = s->nb_globals;
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/* No temps have been previously allocated for size or locality. */
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- memset(s->free_temps, 0, sizeof(s->free_temps));
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+ tcg_temp_ebb_reset_freed(s);
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/* No constant temps have been previously allocated. */
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for (int i = 0; i < TCG_TYPE_COUNT; ++i) {
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@@ -XXX,XX +XXX,XX @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb, uint64_t pc_start)
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}
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#endif
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+ /* Do not reuse any EBB that may be allocated within the TB. */
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+ tcg_temp_ebb_reset_freed(s);
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+
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tcg_optimize(s);
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reachable_code_pass(s);
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--
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2.43.0
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76
diff view generated by jsdifflib
New patch
[PULL 2/4] tcg/riscv: Fix StoreStore barrier generation
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From: Roman Artemev <roman.artemev@syntacore.com>
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2
3
On RISC-V to StoreStore barrier corresponds
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`fence w, w` not `fence r, r`
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Cc: qemu-stable@nongnu.org
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Fixes: efbea94c76b ("tcg/riscv: Add slowpath load and store instructions")
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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Signed-off-by: Denis Tomashev <denis.tomashev@syntacore.com>
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Signed-off-by: Roman Artemev <roman.artemev@syntacore.com>
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Message-ID: <e2f2131e294a49e79959d4fa9ec02cf4@syntacore.com>
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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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---
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tcg/riscv/tcg-target.c.inc | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
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index XXXXXXX..XXXXXXX 100644
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--- a/tcg/riscv/tcg-target.c.inc
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+++ b/tcg/riscv/tcg-target.c.inc
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@@ -XXX,XX +XXX,XX @@ static void tcg_out_mb(TCGContext *s, TCGArg a0)
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insn |= 0x02100000;
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}
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if (a0 & TCG_MO_ST_ST) {
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- insn |= 0x02200000;
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+ insn |= 0x01100000;
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}
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tcg_out32(s, insn);
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}
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--
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2.43.0
diff view generated by jsdifflib
New patch
[PULL 3/4] include/exec: Introduce fpst alias in helper-head.h.inc
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This allows targets to declare that the helper requires a
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float_status pointer and instead of a generic void pointer.
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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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---
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include/exec/helper-head.h.inc | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/include/exec/helper-head.h.inc b/include/exec/helper-head.h.inc
11
index XXXXXXX..XXXXXXX 100644
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--- a/include/exec/helper-head.h.inc
13
+++ b/include/exec/helper-head.h.inc
14
@@ -XXX,XX +XXX,XX @@
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#define dh_alias_ptr ptr
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#define dh_alias_cptr ptr
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#define dh_alias_env ptr
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+#define dh_alias_fpst ptr
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#define dh_alias_void void
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#define dh_alias_noreturn noreturn
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#define dh_alias(t) glue(dh_alias_, t)
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@@ -XXX,XX +XXX,XX @@
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#define dh_ctype_ptr void *
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#define dh_ctype_cptr const void *
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#define dh_ctype_env CPUArchState *
26
+#define dh_ctype_fpst float_status *
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#define dh_ctype_void void
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#define dh_ctype_noreturn G_NORETURN void
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#define dh_ctype(t) dh_ctype_##t
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@@ -XXX,XX +XXX,XX @@
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#define dh_typecode_f64 dh_typecode_i64
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#define dh_typecode_cptr dh_typecode_ptr
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#define dh_typecode_env dh_typecode_ptr
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+#define dh_typecode_fpst dh_typecode_ptr
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#define dh_typecode(t) dh_typecode_##t
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#define dh_callflag_i32 0
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--
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2.43.0
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41
diff view generated by jsdifflib
New patch
[PULL 4/4] target/sparc: Use memcpy() and remove memcpy32()
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From: Philippe Mathieu-Daudé <philmd@linaro.org>
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Rather than manually copying each register, use
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the libc memcpy(), which is well optimized nowadays.
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Suggested-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
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Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Message-ID: <20241205205418.67613-1-philmd@linaro.org>
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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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---
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target/sparc/win_helper.c | 26 ++++++++------------------
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1 file changed, 8 insertions(+), 18 deletions(-)
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diff --git a/target/sparc/win_helper.c b/target/sparc/win_helper.c
17
index XXXXXXX..XXXXXXX 100644
18
--- a/target/sparc/win_helper.c
19
+++ b/target/sparc/win_helper.c
20
@@ -XXX,XX +XXX,XX @@
21
#include "exec/helper-proto.h"
22
#include "trace.h"
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-static inline void memcpy32(target_ulong *dst, const target_ulong *src)
25
-{
26
- dst[0] = src[0];
27
- dst[1] = src[1];
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- dst[2] = src[2];
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- dst[3] = src[3];
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- dst[4] = src[4];
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- dst[5] = src[5];
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- dst[6] = src[6];
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- dst[7] = src[7];
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-}
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-
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void cpu_set_cwp(CPUSPARCState *env, int new_cwp)
37
{
38
/* put the modified wrap registers at their proper location */
39
if (env->cwp == env->nwindows - 1) {
40
- memcpy32(env->regbase, env->regbase + env->nwindows * 16);
41
+ memcpy(env->regbase, env->regbase + env->nwindows * 16,
42
+ sizeof(env->gregs));
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}
44
env->cwp = new_cwp;
45
46
/* put the wrap registers at their temporary location */
47
if (new_cwp == env->nwindows - 1) {
48
- memcpy32(env->regbase + env->nwindows * 16, env->regbase);
49
+ memcpy(env->regbase + env->nwindows * 16, env->regbase,
50
+ sizeof(env->gregs));
51
}
52
env->regwptr = env->regbase + (new_cwp * 16);
53
}
54
@@ -XXX,XX +XXX,XX @@ void cpu_gl_switch_gregs(CPUSPARCState *env, uint32_t new_gl)
55
dst = get_gl_gregset(env, env->gl);
56
57
if (src != dst) {
58
- memcpy32(dst, env->gregs);
59
- memcpy32(env->gregs, src);
60
+ memcpy(dst, env->gregs, sizeof(env->gregs));
61
+ memcpy(env->gregs, src, sizeof(env->gregs));
62
}
63
}
64
65
@@ -XXX,XX +XXX,XX @@ void cpu_change_pstate(CPUSPARCState *env, uint32_t new_pstate)
66
/* Switch global register bank */
67
src = get_gregset(env, new_pstate_regs);
68
dst = get_gregset(env, pstate_regs);
69
- memcpy32(dst, env->gregs);
70
- memcpy32(env->gregs, src);
71
+ memcpy(dst, env->gregs, sizeof(env->gregs));
72
+ memcpy(env->gregs, src, sizeof(env->gregs));
73
} else {
74
trace_win_helper_no_switch_pstate(new_pstate_regs);
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}
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--
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2.43.0
78
79
diff view generated by jsdifflib

Patchew 2.1-devel-b67e4c2

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