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[arm] Mark -marm and -mthumb as being inverse options

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-marm and -mthumb are opposites: one cancels out the other.  This patch
marks them as such so that the driver will eliminate all but the last
option on the command line.  This aids multilib selection which otherwise
can get confused if both are present.

	* config/arm/arm.opt (marm): Mark as the negative of of -mthumb.
	(mthumb): Mark as the negative of -marm.

From-SVN: r249309
This commit is contained in:
Richard Earnshaw 2017-06-16 21:07:11 +00:00 • committed by Richard Earnshaw
parent f54133eaab
commit 718a3eab29
2 changed files with 7 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-06-16 Richard Earnshaw <rearnsha@arm.com>
* config/arm/arm.opt (marm): Mark as the negative of of -mthumb.
(mthumb): Mark as the negative of -marm.
2017-06-16 Richard Earnshaw <rearnsha@arm.com>
* doc/invoke.texi (ARM Options, -mcpu): Document supported

4
gcc/config/arm/arm.opt
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@ -91,7 +91,7 @@ EnumValue
Enum(arm_arch) String(native) Value(-1) DriverOnly
marm
Target Report RejectNegative InverseMask(THUMB)
Target Report RejectNegative Negative(mthumb) InverseMask(THUMB)
Generate code in 32 bit ARM state.
mbig-endian
@ -195,7 +195,7 @@ Target RejectNegative Joined UInteger Var(arm_structure_size_boundary) Init(DEFA
Specify the minimum bit alignment of structures.
mthumb
Target Report RejectNegative Mask(THUMB) Save
Target Report RejectNegative Negative(marm) Mask(THUMB) Save
Generate code for Thumb state.
mthumb-interwork