From 236ab0c60c9cedecd4fc23b526a588ee25636c13 Mon Sep 17 00:00:00 2001 From: Barnaby Wilks Date: Mon, 22 Jul 2019 13:18:27 +0100 Subject: This patch addresses the change in the June Armv8.1-M Mainline specification, that marks certain MVE instructions as no longer UNPREDICTABLE when a source operand is the same as a destination operand for a 32-bit element size. The instructions that this change apply to are: VQDMLADH, VQRDMLADH, VQDMLSDH, VQRDMLSDH The updated documentation is here: https://static.docs.arm.com/ddi0553/bh/DDI0553B_h_armv8m_arm.pdf Fixed this by removing the check for this warning from GAS as well as opcodes. Added testcases to test that the warning is not generated for the instructions that have a 32-bit element size and the same source and destination operand. Also fixed tests that would previously check for this warning. gas * config/tc-arm.c (do_mve_vqdmladh): Remove check for UNPREDICTABLE. * testsuite/gas/arm/mve-vqdmladh-bad.l: Remove tests. * testsuite/gas/arm/mve-vqdmladh-bad.s: Remove tests. * testsuite/gas/arm/mve-vqdmladh.d: New tests. * testsuite/gas/arm/mve-vqdmladh.s: New tests. * testsuite/gas/arm/mve-vqdmlsdh-bad.l: Remove tests. * testsuite/gas/arm/mve-vqdmlsdh-bad.s: Remove tests. * testsuite/gas/arm/mve-vqdmlsdh.d: New tests. * testsuite/gas/arm/mve-vqdmlsdh.s: New tests. opcodes * arm-dis.c (is_mve_unpredictable): Stop marking some MVE instructions as UNPREDICTABLE. --- gas/ChangeLog | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'gas/ChangeLog') diff --git a/gas/ChangeLog b/gas/ChangeLog index 66f79ac..002fca3 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,15 @@ +2019-07-22 Barnaby Wilks + + * config/tc-arm.c (do_mve_vqdmladh): Remove check for UNPREDICTABLE. + * testsuite/gas/arm/mve-vqdmladh-bad.l: Remove tests. + * testsuite/gas/arm/mve-vqdmladh-bad.s: Remove tests. + * testsuite/gas/arm/mve-vqdmladh.d: New tests. + * testsuite/gas/arm/mve-vqdmladh.s: New tests. + * testsuite/gas/arm/mve-vqdmlsdh-bad.l: Remove tests. + * testsuite/gas/arm/mve-vqdmlsdh-bad.s: Remove tests. + * testsuite/gas/arm/mve-vqdmlsdh.d: New tests. + * testsuite/gas/arm/mve-vqdmlsdh.s: New tests. + 2019-07-19 H.J. Lu * testsuite/gas/i386/noextreg.d: Pass -O0 to assembler. -- cgit v1.1