[llvm-bugs] [Bug 27440] New: Binary built with `-flto` errors on ARM

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27440

            Bug ID: 27440
           Summary: Binary built with `-flto` errors on ARM
           Product: tools
           Version: 3.8
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: TableGen
          Assignee: unassignedbugs at nondot.org
          Reporter: tulipawn at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Even though I could probably point to the cause of the problem, namely building
with gcc 5.3.0 and -flto, it's still possible the newer gcc has exposed a bug
in tblgen:

llvm[4]: Building PPC.td instruction information with tblgen
/arm-unknown-linux-gnueabihf/llvm/Release/bin/llvm-tblgen -I 
/src/llvm/lib/Target/PowerPC -I  /src/llvm/include -I  /src/llvm/include -I 
/src/llvm/lib/Target -gen-instr-info -o 
/arm-unknown-linux-gnueabihf/llvm/lib/Target/PowerPC/Release/PPCGenInstrInfo.inc.tmp
/src/llvm/lib/Target/PowerPC/PPC.td
Included from /src/llvm/lib/Target/PowerPC/PPC.td:253:
Included from /src/llvm/lib/Target/PowerPC/PPCInstrInfo.td:2817:
/src/llvm/lib/Target/PowerPC/PPCInstrHTM.td:96:1: error: pattern has side
effects, but hasSideEffects isn't set on the output instructions
def : Pat<(int_ppc_tbegin i32:$R),
^
Included from /src/llvm/lib/Target/PowerPC/PPC.td:253:
/src/llvm/lib/Target/PowerPC/PPCInstrInfo.td:1928:1: error: defined here
def XORI  : DForm_4<26, (outs gprc:$dst), (ins gprc:$src1, u16imm:$src2),
^
Included from /src/llvm/lib/Target/PowerPC/PPC.td:16:
/src/llvm/include/llvm/Target/Target.td:798:1: error: defined here
def EXTRACT_SUBREG : Instruction {
^
Included from /src/llvm/lib/Target/PowerPC/PPC.td:253:
Included from /src/llvm/lib/Target/PowerPC/PPCInstrInfo.td:2814:
/src/llvm/lib/Target/PowerPC/PPCInstr64Bit.td:1157:1: error: inferred from
pattern
def : Pat<(i32 (trunc i64:$in)),
^
Included from /src/llvm/lib/Target/PowerPC/PPC.td:253:
Included from /src/llvm/lib/Target/PowerPC/PPCInstrInfo.td:2817:
/src/llvm/lib/Target/PowerPC/PPCInstrHTM.td:30:1: error: defined here
def TBEGIN : XForm_htm0 <31, 654,
^
error:Errors in DAG patterns

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20160420/387c3a6b/attachment.html>