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| author | Hal Finkel <hfinkel@anl.gov> | 2013-04-01 15:58:15 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-04-01 15:58:15 +0000 |
| commit | 1fce88313e4d46fdd432b68f7c54fde972c0b526 (patch) | |
| tree | 37667e799816e865c01a29de851f0b60f8d7f253 /test/CodeGen/PowerPC/popcnt.ll | |
| parent | 953783e00c9934bc41077108fffeb1e2a17b00df (diff) | |
| download | external_llvm-1fce88313e4d46fdd432b68f7c54fde972c0b526.zip external_llvm-1fce88313e4d46fdd432b68f7c54fde972c0b526.tar.gz external_llvm-1fce88313e4d46fdd432b68f7c54fde972c0b526.tar.bz2 | |
Add the PPC popcntw instruction
The popcntw instruction is available whenever the popcntd instruction is
available, and performs a separate popcnt on the lower and upper 32-bits.
Ignoring the high-order count, this can be used for the 32-bit input case
(saving on the explicit zero extension otherwise required to use popcntd).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178470 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/PowerPC/popcnt.ll')
| -rw-r--r-- | test/CodeGen/PowerPC/popcnt.ll | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/test/CodeGen/PowerPC/popcnt.ll b/test/CodeGen/PowerPC/popcnt.ll index 363f705..b304d72 100644 --- a/test/CodeGen/PowerPC/popcnt.ll +++ b/test/CodeGen/PowerPC/popcnt.ll @@ -4,8 +4,8 @@ define i8 @cnt8(i8 %x) nounwind readnone { %cnt = tail call i8 @llvm.ctpop.i8(i8 %x) ret i8 %cnt ; CHECK: @cnt8 -; CHECK: rldicl -; CHECK: popcntd +; CHECK: rlwinm +; CHECK: popcntw ; CHECK: blr } @@ -13,8 +13,8 @@ define i16 @cnt16(i16 %x) nounwind readnone { %cnt = tail call i16 @llvm.ctpop.i16(i16 %x) ret i16 %cnt ; CHECK: @cnt16 -; CHECK: rldicl -; CHECK: popcntd +; CHECK: rlwinm +; CHECK: popcntw ; CHECK: blr } @@ -22,8 +22,7 @@ define i32 @cnt32(i32 %x) nounwind readnone { %cnt = tail call i32 @llvm.ctpop.i32(i32 %x) ret i32 %cnt ; CHECK: @cnt32 -; CHECK: rldicl -; CHECK: popcntd +; CHECK: popcntw ; CHECK: blr } |