commit 260e07ec8ceb98337a9eeb5377d97dfcc0058a25
author Evan Cheng <evan.cheng@apple.com> Thu Mar 20 02:18:41 2008 +0000
committer Evan Cheng <evan.cheng@apple.com> Thu Mar 20 02:18:41 2008 +0000
tree d7ef645f402fee9016a843d6e778c048612859c7
parent 71a2cb25ebc818383dd0f80475bc166f834e8d99

Fix this xform: (sra (shl X, m), result_size) -> (sign_extend (trunc (shl X, result_size - n - m)))


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48578 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86ISelLowering.cpp

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 93fb802..5a05aba 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -5662,7 +5662,7 @@
     return false;
   unsigned NumBits1 = Ty1->getPrimitiveSizeInBits();
   unsigned NumBits2 = Ty2->getPrimitiveSizeInBits();
-  if (NumBits1 <= NumBits2 || NumBits2 < 8)
+  if (NumBits1 <= NumBits2)
     return false;
   return Subtarget->is64Bit() || NumBits1 < 64;
 }
@@ -5673,7 +5673,7 @@
     return false;
   unsigned NumBits1 = MVT::getSizeInBits(VT1);
   unsigned NumBits2 = MVT::getSizeInBits(VT2);
-  if (NumBits1 <= NumBits2 || NumBits2 < 8)
+  if (NumBits1 <= NumBits2)
     return false;
   return Subtarget->is64Bit() || NumBits1 < 64;
 }