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authorEvan Cheng <evan.cheng@apple.com>2006-03-21 07:12:57 +0000
committerEvan Cheng <evan.cheng@apple.com>2006-03-21 07:12:57 +0000
commit50a6d8c835f8b16a6986b4dd4e4a047cb93a98b0 (patch)
treeb7dd6f57f8eea77f1acf7a65ac404a635bfcc21b
parent82521dd83888148824406a0bf8d6affbb6c61b92 (diff)
Add a note about x86 register coallescing
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26920 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Target/X86/README.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 429d159fce..d9aaecbb96 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -644,3 +644,5 @@ void minf(float a, float b, float *X) {
//===---------------------------------------------------------------------===//
+Teach the coallescer to coales vregs of different register classes. e.g. FR32 /
+FR64 to VR128.