http://llvm.org/bugs/show_bug.cgi?id=4687
Summary: arm10tdmi (armv5) does not support strd
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Backend: ARM
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Created an attachment (id=3289)
--> (http://llvm.org/bugs/attachment.cgi?id=3289)
testcase
LLVM is emitting bad assembly for the attached testcase:
$ llc -O2 -mcpu=arm10tdmi x.bc -o - | grep cpu
.cpu arm10tdmi
$ llc -O2 -mcpu=arm10tdmi x.bc -o - | grep strd
strd r0, [r6]
strd r0, [r6, #+8]
$ llc -O2 -mcpu=arm10tdmi x.bc -o - | as
{standard input}: Assembler messages:
{standard input}:545: Error: selected processor does not support `strd r0,[r6]'
{standard input}:551: Error: selected processor does not support `strd
r0,[r6,#+8]'
Apparently ARMv5 is too old for the 'strd' instruction. (Or perhaps my binutils
just thinks it is.)
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