[llvm-commits] [llvm] r79318 - in /llvm/trunk: lib/Target/ARM/ARMInstrThumb.td lib/Target/ARM/ARMInstrThumb2.td test/CodeGen/Thumb2/thumb2-rev.ll

[Evan Cheng]

Author: evancheng
Date: Tue Aug 18 00:43:23 2009
New Revision: 79318

URL: http://llvm.org/viewvc/llvm-project?rev=79318&view=rev
Log:
Fix revsh pattern.

Modified:
    llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
    llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
    llvm/trunk/test/CodeGen/Thumb2/thumb2-rev.ll

Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb.td?rev=79318&r1=79317&r2=79318&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb.td Tue Aug 18 00:43:23 2009
@@ -543,7 +543,7 @@
                   "revsh", " $dst, $src",
                   [(set tGPR:$dst,
                         (sext_inreg
-                          (or (srl (and tGPR:$src, 0xFFFF), (i32 8)),
+                          (or (srl (and tGPR:$src, 0xFF00), (i32 8)),
                               (shl tGPR:$src, (i32 8))), i16))]>,
                   Requires<[IsThumb1Only, HasV6]>;
 

Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td?rev=79318&r1=79317&r2=79318&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td Tue Aug 18 00:43:23 2009
@@ -951,7 +951,7 @@
                  "revsh", ".w $dst, $src",
                  [(set GPR:$dst,
                     (sext_inreg
-                      (or (srl (and GPR:$src, 0xFFFF), (i32 8)),
+                      (or (srl (and GPR:$src, 0xFF00), (i32 8)),
                           (shl GPR:$src, (i32 8))), i16))]>;
 
 def t2PKHBT : T2I<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt),

Modified: llvm/trunk/test/CodeGen/Thumb2/thumb2-rev.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Thumb2/thumb2-rev.ll?rev=79318&r1=79317&r2=79318&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/Thumb2/thumb2-rev.ll (original)
+++ llvm/trunk/test/CodeGen/Thumb2/thumb2-rev.ll Tue Aug 18 00:43:23 2009
@@ -8,3 +8,16 @@
 }
 
 declare i32 @llvm.bswap.i32(i32) nounwind readnone
+
+define i32 @f2(i32 %X) {
+; CHECK: f2:
+; CHECK: revsh r0, r0
+        %tmp1 = lshr i32 %X, 8
+        %tmp1.upgrd.1 = trunc i32 %tmp1 to i16
+        %tmp3 = trunc i32 %X to i16
+        %tmp2 = and i16 %tmp1.upgrd.1, 255
+        %tmp4 = shl i16 %tmp3, 8
+        %tmp5 = or i16 %tmp2, %tmp4
+        %tmp5.upgrd.2 = sext i16 %tmp5 to i32
+        ret i32 %tmp5.upgrd.2
+}