AVR: target/113156 - Fix ICE due to missing "Save" on -m[long-]double= options.

	Multilib options -mdouble= and -mlong-double= are not orthogonal:
	TARGET_HANDLE_OPTION = avr-common.cc::avr_handle_option() sets them
	such that  sizeof(double) <= sizeof(long double)  is always true.

gcc/
	PR target/113156
	* config/avr/avr.opt (-mdouble, -mlong-double): Add "Save" flag.
	(-mbranch-cost): Set "Optimization" flag.

diff --git a/gcc/config/avr/avr.opt b/gcc/config/avr/avr.opt
index ee0b40603f09762a9a336d4d1a31e272c44dc6c5..c9f2b4d2fe55ae401567f6a62b27f508de814609 100644 (file)
--- a/gcc/config/avr/avr.opt
+++ b/gcc/config/avr/avr.opt
@@ -27,7 +27,7 @@ Target RejectNegative Joined Var(avr_mmcu) MissingArgError(missing device or arc
 -mmcu=MCU      Select the target MCU.
 
 mgas-isr-prologues
-Target Var(avr_gasisr_prologues) UInteger Init(0) Optimization 
+Target Var(avr_gasisr_prologues) UInteger Init(0) Optimization
 Allow usage of __gcc_isr pseudo instructions in ISR prologues and epilogues.
 
 mn-flash=
@@ -61,7 +61,7 @@ Target RejectNegative Mask(NO_INTERRUPTS)
 Change the stack pointer without disabling interrupts.
 
 mbranch-cost=
-Target Joined RejectNegative UInteger Var(avr_branch_cost) Init(0)
+Target Joined RejectNegative UInteger Var(avr_branch_cost) Init(0) Optimization
 Set the branch costs for conditional branch instructions.  Reasonable values are small, non-negative integers.  The default branch cost is 0.
 
 mmain-is-OS_task
@@ -124,11 +124,11 @@ Target Mask(ABSDATA)
 Assume that all data in static storage can be accessed by LDS / STS.  This option is only useful for reduced Tiny devices.
 
 mdouble=
-Target Joined RejectNegative Var(avr_double) Init(0) Enum(avr_bits_e)
+Target Joined RejectNegative Var(avr_double) Init(0) Enum(avr_bits_e) Save
 -mdouble=<BITS>        Use <BITS> bits wide double type.
 
 mlong-double=
-Target Joined RejectNegative Var(avr_long_double) Init(0) Enum(avr_bits_e)
+Target Joined RejectNegative Var(avr_long_double) Init(0) Enum(avr_bits_e) Save
 -mlong-double=<BITS>   Use <BITS> bits wide long double type.
 
 nodevicelib