https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68879
Bug ID: 68879
Summary: PowerPC: SImode cstore optimisation produces bad code
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: anton at samba dot org
Target Milestone: ---
Created attachment 37017
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37017&action=edit
Test case
csmith found an issue that bisects to "rs6000: Optimise SImode cstore on
64-bit"
Attached is a simplified test case. A diff shows:
- addi 9,10,2
- orc 9,9,10
- srwi 9,9,31
+ subf 9,9,6
+ srdi 9,9,63
+ xori 9,9,0x1
