diff options
Diffstat (limited to 'src/jit/emitarm.cpp')
| -rw-r--r-- | src/jit/emitarm.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/jit/emitarm.cpp b/src/jit/emitarm.cpp index f7943f2ffd..77ee3cfc18 100644 --- a/src/jit/emitarm.cpp +++ b/src/jit/emitarm.cpp @@ -1380,7 +1380,7 @@ DONE: /***************************************************************************** * - * emitIns_valid_imm_for_add() returns true when the immediate 'imm' + * emitins_valid_imm_for_add() returns true when the immediate 'imm' * can be encoded using a single add or sub instruction. */ /*static*/ bool emitter::emitIns_valid_imm_for_add(int imm, insFlags flags) @@ -1396,6 +1396,20 @@ DONE: /***************************************************************************** * + * emitins_valid_imm_for_cmp() returns true if this 'imm' + * can be encoded as a input operand to an cmp instruction. + */ +/*static*/ bool emitter::emitIns_valid_imm_for_cmp(int imm, insFlags flags) +{ + if (isModImmConst(imm)) // funky arm immediate + return true; + if (isModImmConst(-imm)) // funky arm immediate via sub + return true; + return false; +} + +/***************************************************************************** + * * emitIns_valid_imm_for_add_sp() returns true when the immediate 'imm' * can be encoded in "add Rd,SP,i10". */ |