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Richard Earnshaw 1cad5e89a9 arm: correct constraints on movsi_compare0 [PR91913]
The peephole that detects a mov of one register to another followed by
a comparison of the original register against zero is only used in Arm
state; but the instruction that matches this is generic to all 32-bit
compilation states.  That instruction lacks support for SP which is
permitted in Arm state, but has restrictions in Thumb2 code.

This patch fixes the problem by allowing SP when in ARM state for all
registers; in Thumb state it allows SP only as a source when the
register really is copied to another target.

	* config/arm/arm.md (movsi_compare0): Allow SP as a source register
	in Thumb state and also as a destination in Arm state.  Add T16
	variants.
2020-02-10 15:53:12 +00:00
config Fixes after recent configure changes relating to static libraries 2020-02-01 00:34:28 +00:00
contrib contrib: Change 'remote' for personal branches and add branch creation script 2020-01-24 14:38:16 +00:00
fixincludes Fix missing SCNuMAX defines in inttypes.h on hpux11.[01]* 2020-01-25 12:20:24 -05:00
gcc arm: correct constraints on movsi_compare0 [PR91913] 2020-02-10 15:53:12 +00:00
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libbacktrace libbacktrace: always pass -g when compiling test code 2020-02-03 18:13:28 -08:00
libcc1 init.c (build_new): Add location_t parameter and use it throughout. 2020-01-07 17:58:18 +00:00
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libgcc arm: Fix up arm installed unwind.h for use in pedantic modes [PR93615] 2020-02-10 14:35:31 +00:00
libgfortran Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
libgo syscall: fix riscv64 GNU/Linux build 2020-02-03 18:14:19 -08:00
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libstdc++-v3 libstdc++: Fix names of types in comment 2020-02-09 14:00:23 +00:00
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ChangeLog rs6000: Update constraint documentation 2020-02-03 18:23:51 +00:00
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config-ml.in MSP430: Add -fno-exceptions multilib 2019-12-11 19:19:50 +00:00
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configure configure.ac: Factor out common cases for compare_exclusions. 2019-12-11 20:59:35 +00:00
configure.ac configure.ac: Factor out common cases for compare_exclusions. 2019-12-11 20:59:35 +00:00
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MAINTAINERS MAINTAINERS: Update my email address. 2020-01-13 22:10:14 +03:00
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