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[Qemu-ppc] [PULL 44/52] target-ppc: Special Case of rlwimi Should Use De
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PULL 44/52] target-ppc: Special Case of rlwimi Should Use Deposit |
Date: |
Thu, 4 Sep 2014 19:20:32 +0200 |
From: Tom Musta <address@hidden>
The special case of rlwimi where MB <= ME and SH = 31-ME can be implemented
with a single TCG deposit operation. This replaces the less general case
of SH = MB = 0 and ME = 31.
Signed-off-by: Tom Musta <address@hidden>
Suggested-by: Richard Henderson <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
target-ppc/translate.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 47dc903..095b83c 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -1636,12 +1636,9 @@ static void gen_rlwimi(DisasContext *ctx)
mb = MB(ctx->opcode);
me = ME(ctx->opcode);
sh = SH(ctx->opcode);
- if (likely(sh == 0 && mb == 0 && me == 31)) {
-#if defined(TARGET_PPC64)
- tcg_gen_mov_i64(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
-#else
- tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
-#endif
+ if (likely(sh == (31-me) && mb <= me)) {
+ tcg_gen_deposit_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
+ cpu_gpr[rS(ctx->opcode)], sh, me - mb + 1);
} else {
target_ulong mask;
TCGv t1;
--
1.8.1.4
- [Qemu-ppc] [PULL 11/52] PPC: mac99: Move NVRAM to page boundary when necessary, (continued)
- [Qemu-ppc] [PULL 11/52] PPC: mac99: Move NVRAM to page boundary when necessary, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 27/52] target-ppc: Bug Fix: rlwnm, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 24/52] ppc: Add hw breakpoint watchpoint support, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 26/52] target-ppc: Bug Fix: rlwinm, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 33/52] target-ppc: Bug Fix: srad, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 25/52] ppc/spapr: Fix MAX_CPUS to 255, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 30/52] target-ppc: Bug Fix: mullw, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 37/52] PPC: mac_nvram: Remove unused functions, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 35/52] PPC: KVM: Use vm check_extension for pv hcall, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 29/52] target-ppc: Bug Fix: mullwo, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 44/52] target-ppc: Special Case of rlwimi Should Use Deposit,
Alexander Graf <=
- [Qemu-ppc] [PULL 36/52] PPC: mac99: Fix core99 timer frequency, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 31/52] target-ppc: Bug Fix: mulldo OV Detection, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 34/52] KVM: Add helper to run KVM_CHECK_EXTENSION on vm fd, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 28/52] target-ppc: Bug Fix: rlwimi, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 32/52] target-ppc: Bug Fix: srawi, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 43/52] spapr-vlan: Don't touch last entry in buffer list, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 42/52] spapr_pci: Fix config space corruption, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 48/52] target-ppc: Clean up mullwo, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 39/52] PPC: mac_nvram: Split NVRAM into OF and OSX parts, Alexander Graf, 2014/09/04
- [Qemu-ppc] [PULL 46/52] target-ppc: Optimize rlwnm MB=0 ME=31, Alexander Graf, 2014/09/04