From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 29 Mar 2007 21:38:31 +0000 (+0000)
Subject: Can't re-materialize mov r, imm in thumb since mov would clobber the condition code.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5e3c203cfd460ffa60341fb555fba6162abcbe61;p=oota-llvm.git

Can't re-materialize mov r, imm in thumb since mov would clobber the condition code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35479 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td
index 3c7cd03ee75..ad8a88f2077 100644
--- a/lib/Target/ARM/ARMInstrThumb.td
+++ b/lib/Target/ARM/ARMInstrThumb.td
@@ -379,7 +379,7 @@ def tLSRrr : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
                  "lsr $dst, $rhs",
                  [(set GPR:$dst, (srl GPR:$lhs, GPR:$rhs))]>;
 
-let isReMaterializable = 1 in
+// FIXME: This is not rematerializable because mov changes the condition code.
 def tMOVi8 : TI<(ops GPR:$dst, i32imm:$src),
                  "mov $dst, $src",
                  [(set GPR:$dst, imm0_255:$src)]>;