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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2015-12-22 11:06:35 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2015-12-22 11:06:35 +0100 |
| commit | f531d386db7051761bd31f2740a893ff97ce65aa (patch) | |
| tree | 0e0d535d0e36927500441de21ac727dc1677ac4b /arm/Asmexpand.ml | |
| parent | 12b5eaf144285de569be7123913ee78f17dd9b03 (diff) | |
| download | compcert-kvx-f531d386db7051761bd31f2740a893ff97ce65aa.tar.gz compcert-kvx-f531d386db7051761bd31f2740a893ff97ce65aa.zip | |
Add CLZ builtins for ARM and IA32
ARM: add __builtin_clzl, __builtin_clzll
IA32: add __builtin_clzl, __builtin_clzll,
__builtin_ctzl, __builtin_ctzll
Add corresponding tests in tests/regression/
Diffstat (limited to 'arm/Asmexpand.ml')
| -rw-r--r-- | arm/Asmexpand.ml | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arm/Asmexpand.ml b/arm/Asmexpand.ml index 2b19cbe8..65bb19ee 100644 --- a/arm/Asmexpand.ml +++ b/arm/Asmexpand.ml @@ -287,8 +287,14 @@ let expand_builtin_inline name args res = emit (Prev (res, a1)) | "__builtin_bswap16", [BA(IR a1)], BR(IR res) -> emit (Prev16 (res, a1)) - | "__builtin_clz", [BA(IR a1)], BR(IR res) -> + | ("__builtin_clz" | "__builtin_clzl"), [BA(IR a1)], BR(IR res) -> emit (Pclz (res, a1)) + | "__builtin_clzll", [BA_splitlong(BA (IR ah), BA (IR al))], BR(IR res) -> + emit (Pclz (IR14, al)); + emit (Pcmp (ah, SOimm _0)); + emit (Pmovite (TCeq, IR14, SOimm _0, SOreg IR14)); + emit (Pclz (res, ah)); + emit (Padd (res, res, SOreg IR14)) (* Float arithmetic *) | "__builtin_fabs", [BA(FR a1)], BR(FR res) -> emit (Pfabsd (res,a1)) |