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Type:
Enhancement
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Resolution: Implemented
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Priority:
Low
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Code Generation Tools
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CODEGEN-7115
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MSP430_18.12.2.LTS
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MSP430_20.2.0.LTS*
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default
The attached file contains this line ...
dst &= ~src;
The variables dst and src are of type unsigned char. Build it with optimization ...
cl430 -o -s try1.c
The resulting assembly for that line is ...
;** 5 ----------------------- dst &= src^0xff;
.dwpsn file "try1.c",line 5,column 5,is_stmt,isa 0
MOV.W #255,r15 ; [] |5|
XOR.B &src+0,r15 ; [] |5|
AND.B r15,&dst+0 ; [] |5|
However, build it with optimization disabled ...
cl430 -ooff -s try1.c
... and the generated code uses the BIC instruction ...
;----------------------------------------------------------------------
; 5 | dst &= ~src;
;----------------------------------------------------------------------
BIC.B &src+0,&dst+0 ; [] |5|
