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authorEvan Cheng <evan.cheng@apple.com>2006-02-02 02:40:17 +0000
committerEvan Cheng <evan.cheng@apple.com>2006-02-02 02:40:17 +0000
commitd3908f79cb55c06777b7d8e5dc798bdaa31d81a5 (patch)
tree3a165fc3e55cd3574f63336c4485812cb2901d00 /llvm/lib/Target
parent0bd74558ae783ce6f6177943b8d3a620d5f0714e (diff)
downloadbcm5719-llvm-d3908f79cb55c06777b7d8e5dc798bdaa31d81a5.tar.gz
bcm5719-llvm-d3908f79cb55c06777b7d8e5dc798bdaa31d81a5.zip
Update.
llvm-svn: 25896
Diffstat (limited to 'llvm/lib/Target')
-rw-r--r--llvm/lib/Target/X86/README.txt17
1 files changed, 5 insertions, 12 deletions
diff --git a/llvm/lib/Target/X86/README.txt b/llvm/lib/Target/X86/README.txt
index e84142851a0..57aaab05773 100644
--- a/llvm/lib/Target/X86/README.txt
+++ b/llvm/lib/Target/X86/README.txt
@@ -215,18 +215,6 @@ when it can invert the result of the compare for free.
//===---------------------------------------------------------------------===//
-None of the SSE instructions are handled in X86RegisterInfo::foldMemoryOperand,
-which prevents the spiller from folding spill code into the instructions.
-
-This leads to code like this:
-
-mov %eax, 8(%esp)
-cvtsi2sd %eax, %xmm0
-instead of:
-cvtsi2sd 8(%esp), %xmm0
-
-//===---------------------------------------------------------------------===//
-
LSR should be turned on for the X86 backend and tuned to take advantage of its
addressing modes.
@@ -367,3 +355,8 @@ We currently emit:
This is a bugpoint reduced testcase, which is why the testcase doesn't make
much sense (e.g. its an infinite loop). :)
+//===---------------------------------------------------------------------===//
+
+None of the FPStack instructions are handled in
+X86RegisterInfo::foldMemoryOperand, which prevents the spiller from
+folding spill code into the instructions.
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