[arm] Improve code generation for addvsi4.

[thirdparty/gcc.git] / gcc / ChangeLog

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
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--- a/gcc/ChangeLog
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@@ -1,3 +1,16 @@
+2019-10-18  Richard Earnshaw  <rearnsha@arm.com>
+
+       * config/arm/arm.md (addv<mode>4): Delete.
+       (addvsi4): New pattern.  Handle immediate values that the architecture
+       supports.
+       (addvdi4): New pattern.
+       (addsi3_compareV): Rename to ...
+       (addsi3_compareV_reg): ... this.  Add constraints for thumb2 variants
+       and use COMPARE rather than NE.
+       (addsi3_compareV_imm): New pattern.
+       * config/arm/arm.c (arm_select_cc_mode): Return CC_Vmode for
+       a signed-overflow check.
+
 2019-10-18  Richard Earnshaw  <rearnsha@arm.com>
 
        * config/arm/arm-modes.def (CC_ADC): New CC mode.