| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | |
| Mon, 29 Oct 2012 17:51:52 +0000 (17:51 +0000) | ||
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | |
| Mon, 29 Oct 2012 17:51:52 +0000 (17:51 +0000) | ||
| commit | 573303e62a913ec881fde3434d7babed0bd4da33 | |
| tree | c2a6427d3525e7ddec03f1b52477d05700071aeb | tree | snapshot (tar.xz tar.gz zip) |
| parent | 78dab643e0d49cc76ca20409d733c23bc17171dd | commit | diff |
Completely disallow partial copies in adjustCopiesBackFrom().
Partial copies can show up even when CoalescerPair.isPartial() returns
false. For example:
%vreg24:dsub_0<def> = COPY %vreg31:dsub_0; QPR:%vreg24,%vreg31
Such a partial-partial copy is not good enough for the transformation
adjustCopiesBackFrom() needs to do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166944 91177308-0d34-0410-b5e6-96231b3b80d8
Partial copies can show up even when CoalescerPair.isPartial() returns
false. For example:
%vreg24:dsub_0<def> = COPY %vreg31:dsub_0; QPR:%vreg24,%vreg31
Such a partial-partial copy is not good enough for the transformation
adjustCopiesBackFrom() needs to do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166944 91177308-0d34-0410-b5e6-96231b3b80d8
| lib/CodeGen/RegisterCoalescer.cpp | diff | blob | history | |
| test/CodeGen/ARM/coalesce-subregs.ll | diff | blob | history |