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Can't re-materialize mov r, imm in thumb since mov would clobber the condition code.
authorEvan Cheng <evan.cheng@apple.com>
Thu, 29 Mar 2007 21:38:31 +0000 (21:38 +0000)
committerEvan Cheng <evan.cheng@apple.com>
Thu, 29 Mar 2007 21:38:31 +0000 (21:38 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35479 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/ARMInstrThumb.td

index 3c7cd03..ad8a88f 100644 (file)
@@ -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)]>;