https://sourceware.org/bugzilla/show_bug.cgi?id=24390
Bug ID: 24390
Summary: objdump decode of mtfsb* instructions has odd output
Product: binutils
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: pc at us dot ibm.com
Target Milestone: ---
Target: powerpc*-*
Created attachment 11703
--> https://sourceware.org/bugzilla/attachment.cgi?id=11703&action=edit
test case to produce mtfsb* instructions
Using the attached testcase with today's GCC trunk and "gcc -c ld2i.c -O3
-mcpu=power9 -Wa,-adhln" includes the decode of the generated mtfsb*
instructions:
--
71 003c 4C00E0FF mtfsb1 31
72 0040 8C00C0FF mtfsb0 30
--
...which is reasonable.
Performing "objdump --disassemble ld2i.o" produces:
--
3c: 4c 00 e0 ff mtfsb1 4*cr7+so
40: 8c 00 c0 ff mtfsb0 4*cr7+eq
--
...which is confusing.
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