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| author | Richard Henderson | 2016-11-21 11:58:25 +0100 |
|---|---|---|
| committer | Richard Henderson | 2017-01-10 17:48:57 +0100 |
| commit | 79770002207ed0579c47c72cecf97c5d5915b185 (patch) | |
| tree | 663c2b132d85bfb5fe9df146e8924a2587c57f76 /target | |
| parent | target-alpha: Use ctpop helper (diff) | |
| download | qemu-79770002207ed0579c47c72cecf97c5d5915b185.tar.gz qemu-79770002207ed0579c47c72cecf97c5d5915b185.tar.xz qemu-79770002207ed0579c47c72cecf97c5d5915b185.zip | |
target-ppc: Use ctpop helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target')
| -rw-r--r-- | target/ppc/helper.h | 3 | ||||
| -rw-r--r-- | target/ppc/int_helper.c | 18 | ||||
| -rw-r--r-- | target/ppc/translate.c | 6 |
3 files changed, 9 insertions, 18 deletions
diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 1ed1d2c7e1..0a8fbba3c5 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -39,12 +39,11 @@ DEF_HELPER_4(divweu, tl, env, tl, tl, i32) DEF_HELPER_4(divwe, tl, env, tl, tl, i32) DEF_HELPER_FLAGS_1(popcntb, TCG_CALL_NO_RWG_SE, tl, tl) -DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_2(cmpb, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_3(sraw, tl, env, tl, tl) #if defined(TARGET_PPC64) DEF_HELPER_FLAGS_2(cmpeqb, TCG_CALL_NO_RWG_SE, i32, tl, tl) -DEF_HELPER_FLAGS_1(popcntd, TCG_CALL_NO_RWG_SE, tl, tl) +DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_2(bpermd, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_3(srad, tl, env, tl, tl) DEF_HELPER_0(darn32, tl) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index e1bb695748..1871792ff6 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -272,6 +272,7 @@ target_ulong helper_srad(CPUPPCState *env, target_ulong value, #if defined(TARGET_PPC64) target_ulong helper_popcntb(target_ulong val) { + /* Note that we don't fold past bytes */ val = (val & 0x5555555555555555ULL) + ((val >> 1) & 0x5555555555555555ULL); val = (val & 0x3333333333333333ULL) + ((val >> 2) & @@ -283,6 +284,7 @@ target_ulong helper_popcntb(target_ulong val) target_ulong helper_popcntw(target_ulong val) { + /* Note that we don't fold past words. */ val = (val & 0x5555555555555555ULL) + ((val >> 1) & 0x5555555555555555ULL); val = (val & 0x3333333333333333ULL) + ((val >> 2) & @@ -295,29 +297,15 @@ target_ulong helper_popcntw(target_ulong val) 0x0000ffff0000ffffULL); return val; } - -target_ulong helper_popcntd(target_ulong val) -{ - return ctpop64(val); -} #else target_ulong helper_popcntb(target_ulong val) { + /* Note that we don't fold past bytes */ val = (val & 0x55555555) + ((val >> 1) & 0x55555555); val = (val & 0x33333333) + ((val >> 2) & 0x33333333); val = (val & 0x0f0f0f0f) + ((val >> 4) & 0x0f0f0f0f); return val; } - -target_ulong helper_popcntw(target_ulong val) -{ - val = (val & 0x55555555) + ((val >> 1) & 0x55555555); - val = (val & 0x33333333) + ((val >> 2) & 0x33333333); - val = (val & 0x0f0f0f0f) + ((val >> 4) & 0x0f0f0f0f); - val = (val & 0x00ff00ff) + ((val >> 8) & 0x00ff00ff); - val = (val & 0x0000ffff) + ((val >> 16) & 0x0000ffff); - return val; -} #endif /*****************************************************************************/ diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 1224f56be6..121218087f 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -1844,14 +1844,18 @@ static void gen_popcntb(DisasContext *ctx) static void gen_popcntw(DisasContext *ctx) { +#if defined(TARGET_PPC64) gen_helper_popcntw(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]); +#else + tcg_gen_ctpop_i32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]); +#endif } #if defined(TARGET_PPC64) /* popcntd: PowerPC 2.06 specification */ static void gen_popcntd(DisasContext *ctx) { - gen_helper_popcntd(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]); + tcg_gen_ctpop_i64(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]); } #endif |