RELEASE NOTES CST7 V5.0.04 Note: This release also contains some
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Release Notes CST7
RELEASE NOTES CST7 V5.0.04
Note: This release also contains some information about Compiler. your license configuration does include feature, just ignore topics related C++. NOTE: Recompile your sources
List Features
level common code optimizer. Code patterns appearing more than once within same function placed sub-function. stack memory consumption increase. optimization switched code optimized size. switched using -onf. code optimized speed, common code optimizer switched default. this case switched using -of. Removed unnecessary redundant store appearing combined assignment memory indirection (Example: 4;). Compares with translated (compares with with INC), only flags used conditional branch. optimization only done don't lead reload. Avoid loading pointer memory indirect with byte offset accesses. Example: char translated A,ch p[4] X,#4 [(p.w)],X pseudo register _SEX used anymore. Avoid pointer addition indexed addressing with following pattern: char p[i[j]] Now, simple memory indirect access generated without pointer arithmetics. compiler sometimes generated ugly code compares having operand already loaded into register. Example: char char fun(void); if(ch fun()) translated into: CALL _spill,A
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Release Notes CST7 A,ch A,spill now, code CALL A,ch When calling function pointer with constant parameter, parameter first loaded register, pushed, finally popped. Now, parameter loaded after pointer, which optimizes away push pop. improved performance constructor/destructors call case element arrays, e.g. myClass myClass[1]; inlining memset() memcpy() using -Oilib option. Additionally, there message C5920 function been inlined. ELF, official assigned used. tools, which only know with this compiler, option -f2o instead -f2. compiler inlines such examples: #define IO_REG (*((volatile unsigned 0xFFC1C)) struct IO_DEVICE{ receivedMessage(void){ return IO_REG&0x0100; IO_DEVICE myDevice; void main(void){
Demo Version Limitations
have demo version compiler, there following limitations: total code size source file (compilation unit) limited 1024 bytes total number functions source file (compilation unit) limited remainder displayed whenever source file compiled.
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