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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-04-04 18:23:42 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-04-04 18:23:42 +0000 |
| commit | c5041cac7d3aeaa7350abadf2a7ada92e8da27dc (patch) | |
| tree | eefd36287fd9e7715a6717aa0c9c6f32384e081b /lib/Target/ARM/README.txt | |
| parent | 1487cb3a5a0535b343e602e976af538fd87d0df2 (diff) | |
| download | llvm-c5041cac7d3aeaa7350abadf2a7ada92e8da27dc.tar.gz llvm-c5041cac7d3aeaa7350abadf2a7ada92e8da27dc.tar.bz2 llvm-c5041cac7d3aeaa7350abadf2a7ada92e8da27dc.tar.xz | |
Implement ARMBaseInstrInfo::commuteInstruction() for MOVCCr.
A MOVCCr instruction can be commuted by inverting the condition. This
can help reduce register pressure and remove unnecessary copies in some
cases.
<rdar://problem/11182914>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154033 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/README.txt')
| -rw-r--r-- | lib/Target/ARM/README.txt | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/lib/Target/ARM/README.txt b/lib/Target/ARM/README.txt index 4fcaecfcb2..3eddda812f 100644 --- a/lib/Target/ARM/README.txt +++ b/lib/Target/ARM/README.txt @@ -501,11 +501,6 @@ those operations and the ARMv6 scalar versions. //===---------------------------------------------------------------------===// -ARM::MOVCCr is commutable (by flipping the condition). But we need to implement -ARMInstrInfo::commuteInstruction() to support it. - -//===---------------------------------------------------------------------===// - Split out LDR (literal) from normal ARM LDR instruction. Also consider spliting LDR into imm12 and so_reg forms. This allows us to clean up some code. e.g. ARMLoadStoreOptimizer does not need to look at LDR (literal) and LDR (so_reg) |