[llvm-commits] [llvm] r77920 - in /llvm/trunk: lib/Target/XCore/XCoreInstrInfo.td test/CodeGen/XCore/sext.ll

[Richard Osborne]

Author: friedgold
Date: Sun Aug  2 17:45:24 2009
New Revision: 77920

URL: http://llvm.org/viewvc/llvm-project?rev=77920&view=rev
Log:
Add extra SEXT pattern.

Added:
    llvm/trunk/test/CodeGen/XCore/sext.ll
Modified:
    llvm/trunk/lib/Target/XCore/XCoreInstrInfo.td

Modified: llvm/trunk/lib/Target/XCore/XCoreInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCoreInstrInfo.td?rev=77920&r1=77919&r2=77920&view=diff

==============================================================================
--- llvm/trunk/lib/Target/XCore/XCoreInstrInfo.td (original)
+++ llvm/trunk/lib/Target/XCore/XCoreInstrInfo.td Sun Aug  2 17:45:24 2009
@@ -95,6 +95,12 @@
   return getI32Imm(-value);
 }]>;
 
+def bpwsub_xform : SDNodeXForm<imm, [{
+  // Transformation function: 32-imm
+  uint32_t value = N->getZExtValue();
+  return getI32Imm(32-value);
+}]>;
+
 def div4neg_xform : SDNodeXForm<imm, [{
   // Transformation function: -imm/4
   uint32_t value = N->getZExtValue();
@@ -162,6 +168,14 @@
           || value == 32;
 }]>;
 
+def immBpwSubBitp : PatLeaf<(imm), [{
+  uint32_t value = (uint32_t)N->getZExtValue();
+  return (value >= 24 && value <= 31)
+          || value == 16
+          || value == 8
+          || value == 0;
+}]>;
+
 def lda16f : PatFrag<(ops node:$addr, node:$offset),
                      (add node:$addr, (shl node:$offset, 1))>;
 def lda16b : PatFrag<(ops node:$addr, node:$offset),
@@ -989,3 +1003,5 @@
 def : Pat<(sra GRRegs:$src, 31),
           (ASHR_l2rus GRRegs:$src, 32)>;
 
+def : Pat<(sra (shl GRRegs:$src, immBpwSubBitp:$imm), immBpwSubBitp:$imm),
+          (SEXT_rus GRRegs:$src, (bpwsub_xform immBpwSubBitp:$imm))>;

Added: llvm/trunk/test/CodeGen/XCore/sext.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/XCore/sext.ll?rev=77920&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/XCore/sext.ll (added)
+++ llvm/trunk/test/CodeGen/XCore/sext.ll Sun Aug  2 17:45:24 2009
@@ -0,0 +1,32 @@
+; RUN: llvm-as < %s | llc -march=xcore | FileCheck %s
+define i32 @sext1(i32 %a) {
+	%1 = trunc i32 %a to i1
+	%2 = sext i1 %1 to i32
+	ret i32 %2
+}
+; CHECK: sext1:
+; CHECK: sext r0, 1
+
+define i32 @sext2(i32 %a) {
+	%1 = trunc i32 %a to i2
+	%2 = sext i2 %1 to i32
+	ret i32 %2
+}
+; CHECK: sext2:
+; CHECK: sext r0, 2
+
+define i32 @sext8(i32 %a) {
+	%1 = trunc i32 %a to i8
+	%2 = sext i8 %1 to i32
+	ret i32 %2
+}
+; CHECK: sext8:
+; CHECK: sext r0, 8
+
+define i32 @sext16(i32 %a) {
+	%1 = trunc i32 %a to i16
+	%2 = sext i16 %1 to i32
+	ret i32 %2
+}
+; CHECK: sext16:
+; CHECK: sext r0, 16