diff options
| author | Richard Henderson <rth@twiddle.net> | 2016-11-21 11:58:25 +0100 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-01-10 08:48:57 -0800 |
| commit | 79770002207ed0579c47c72cecf97c5d5915b185 (patch) | |
| tree | 663c2b132d85bfb5fe9df146e8924a2587c57f76 /target/ppc/int_helper.c | |
| parent | de26a584d23b983f4db192a078827abe6dc894ac (diff) | |
target-ppc: Use ctpop helper
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/ppc/int_helper.c')
| -rw-r--r-- | target/ppc/int_helper.c | 18 |
1 files changed, 3 insertions, 15 deletions
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 /*****************************************************************************/ |