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author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-09-27 15:14:04 +0000 |
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committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-09-27 15:14:04 +0000 |
commit | 8dac19c0708c9bd0da0b832014918e00ded44d86 (patch) | |
tree | 008a633a794b968815a5e6d8112a4aa931e06cc3 /lib/Target/SystemZ/SystemZOperands.td | |
parent | 4d835f1cbe5d8c5f6cea4040bea9b180927a1c05 (diff) | |
download | llvm-8dac19c0708c9bd0da0b832014918e00ded44d86.tar.gz llvm-8dac19c0708c9bd0da0b832014918e00ded44d86.tar.bz2 llvm-8dac19c0708c9bd0da0b832014918e00ded44d86.tar.xz |
[SystemZ] Improve handling of PC-relative addresses
The backend previously folded offsets into PC-relative addresses
whereever possible. That's the right thing to do when the address
can be used directly in a PC-relative memory reference (using things
like LRL). But if we have a register-based memory reference and need
to load the PC-relative address separately, it's better to use an anchor
point that could be shared with other accesses to the same area of the
variable.
Fixes a FIXME.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191524 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/SystemZ/SystemZOperands.td')
-rw-r--r-- | lib/Target/SystemZ/SystemZOperands.td | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/SystemZ/SystemZOperands.td b/lib/Target/SystemZ/SystemZOperands.td index f1db1fdb4c..3ad146c57d 100644 --- a/lib/Target/SystemZ/SystemZOperands.td +++ b/lib/Target/SystemZ/SystemZOperands.td @@ -46,7 +46,8 @@ class PCRelOperand<ValueType vt, AsmOperandClass asmop> : Operand<vt> { // address with address size VT. SELF is the name of the operand and // ASMOP is the associated asm operand. class PCRelAddress<ValueType vt, string self, AsmOperandClass asmop> - : ComplexPattern<vt, 1, "selectPCRelAddress", [z_pcrel_wrapper]>, + : ComplexPattern<vt, 1, "selectPCRelAddress", + [z_pcrel_wrapper, z_pcrel_offset]>, PCRelOperand<vt, asmop> { let MIOperandInfo = (ops !cast<Operand>(self)); } |