Avr-gcc Bugs

Bugs

PR	Description	Note
46779	wrong code generation for array access	= 46779
45291	avr miscompilations related to frame pointer registers	= 46779
45263	registers used in __do_global_ctors can get clobbered
44940	XMEGA RAMPZ Initialization
44643	ice in c-typeck.c
44506	-mtiny-stack causes internal compiler error on gcc for avr
42240	[4.3/4.4 Regression] wrong epilogue on naked function	4.6.0, 4.5.3, 4.4.x, 4.3.x
42204	update_eliminables should be called in reload after something changes
42149	ICE:verify_gimple failed for avr target
42146	ICE in tree_low_cst
41894	wrong code with -fno-split-wide-types	= 46779
41885	AVR Rotate patterns do not correctly consider overlap.	4.5.0
39633	[avr] loop bug
39386	[avr] different computation results for O1 and O0 executables
39212	ice for AVR target: unable to find a register to spill in class 'POINTER_REGS'
38549	[avr] eicall not properly set for > 128K program space
38342	[4.3/4.4/4.5/4.6 Regression] __attribute__((__progmem__)) not propagated from typedef to data
38159	[avr] ICE: gcc.c-torture/execute/pr38051.c compilation, -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions
37165	[4.4/4.5/4.6 Regression] FAIL: gcc.dg/matrix/matrix-1.c scan-ipa-dump-times matrix-reorg "Flattened 3 dimensions" 1
36571	Default untyped return for AVR is byte register.
35073	illegal opcode movw for mcu avr3
34734	attribute((progmem)) not handled properly in C++ for AVRs
28718	Call to -lgcc added prior to user libraries
26883	ICE when assigning memory attribute to class with simple constructor
26882	[AVR][C++] ICE when using template function with memory attributes

Optimierung

PR	Optimization
46278	avr-gcc 4.5.1 doing suboptimal reloads using X
43745	[avr] g++ puts VTABLES in SRAM
18065	usual arithmetic conversion not applying correctly
43746	-fmerge-constants and -fmerge-all-constants don't work at AVR target
43088	[avr] Suspect optimizer missed code in gcc 4.4.3..
43095	[avr] GCC produces poor code for 4- and 8-byte values
42210	avr: optimizing assignment to a bit field
39250	unsigned char times 64U produces long slow loop
33970	Missed optimization using unsigned char loop variable
33050	[avr] unnessary register save
33049	[avr] bit extraction non optimal, inversing logic solves problem
30908	tree cost for types which are > WORD_SIZE
29560	[avr] Poor optimization for byte shifts
29524	[4.3/4.4/4.5/4.6 Regression] Too much RAM used: __clz_tab[] linked
41076	[avr] pessimal code for logical OR of 8-bit fields
39819	[avr] Missed optimisation when setting 4-byte values
39621	Delaying operation to end of function causes high stack usage
39760	register allocation costs are not well described on AVR
38629	target-specific parameters for inline heuristics not defined for AVR
36884	ifcvt poor optimization
36561	store using long array index not hoisted out of loop
36467	[avr] Missed optimization with pointer arithmetic and mul*
41849	optimization fails when register variables are used for an interrupt
35860	[4.3/4.4/4.5/4.6 Regression] [avr] code bloat caused by -fsplit-wide-types
34888	Stack patterns for AVR not optimal
34792	[avr] c++ worse than c compiler at 8-bit optimisations
34791	[avr] optimisation of 8-bit logic sometimes fails
34789	[avr] sometimes the compiler keeps addresses in registers unnecessarily
11180	[avr-gcc] Optimization decrease performance of struct assignment.
3507	appalling optimisation with sub/cmp on multiple targets
20296	Speeding up small interrupts on avr
18145	Do not emit __do_copy_data or __do_clear_bss if .data or .bss is empty.
27663	missed-optimization transforming a byte array to unsigned long

Debug-Info, Build, Ada, Fortran, ...

PR	Debug-Info, Build, Ada, Fortran	Note
45261	Doesn't indicate failure status when it doesn't support (attiny2313A)	4.6.0, 4.5.3, 4.4.x, 4.3.x
47597	ICE: call frame debugging information is not handled when case is post_dec
20072	make install doesn't create /usr/local/info/dir if .../dir not already present.
46426	[avr] avr/libgcc.S in SVN r166596 fails to compile
46192	renaming of a volatile variable generates wrong code	ada
34040	Support for DOUBLE_TYPE_SIZE != 64 targets	fortran
17994	avr-gcc does not output a dwarf2 .debug_frame section
18989	A few potentially ominous, and several likely harmless warnings during 4.0 build
14118	h8300-elf, avr-elf, m68k-elf ports cannot build libmudflap

Erweiterungen

PR	Extensions
45099	[avr] Warning could be issued for use of register variables that will fail.

Ungültig

PR	Invalid

Weblinks

[1]