[llvm-commits] [llvm] r139926 - in /llvm/trunk: lib/Target/ARM/ARMInstrThumb2.td test/MC/ARM/basic-thumb2-instructions.s

[Jim Grosbach]

Author: grosbach
Date: Fri Sep 16 13:32:30 2011
New Revision: 139926

URL: http://llvm.org/viewvc/llvm-project?rev=139926&view=rev
Log:
Thumb2 assembly parsing and encoding for SSAT.

Modified:
    llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
    llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s

Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td?rev=139926&r1=139925&r2=139926&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td Fri Sep 16 13:32:30 2011
@@ -2019,7 +2019,7 @@
 }
 
 def t2USAT: T2SatI<
-                (outs rGPR:$Rd), (ins i32imm:$sat_imm, rGPR:$Rn, shift_imm:$sh),
+               (outs rGPR:$Rd), (ins imm0_31:$sat_imm, rGPR:$Rn, shift_imm:$sh),
                 NoItinerary, "usat", "\t$Rd, $sat_imm, $Rn$sh",
                 [/* For disassembly only; pattern left blank */]> {
   let Inst{31-27} = 0b11110;
@@ -2028,7 +2028,7 @@
   let Inst{15} = 0;
 }
 
-def t2USAT16: T2SatI<(outs rGPR:$Rd), (ins i32imm:$sat_imm, rGPR:$Rn),
+def t2USAT16: T2SatI<(outs rGPR:$Rd), (ins imm0_15:$sat_imm, rGPR:$Rn),
                      NoItinerary,
                      "usat16", "\t$Rd, $sat_imm, $Rn",
                      [/* For disassembly only; pattern left blank */]>,
@@ -3854,3 +3854,10 @@
 def : t2InstAlias<"rsb${s}${p} $Rdn, $ShiftedRm",
            (t2RSBrs rGPR:$Rdn, rGPR:$Rdn, t2_so_reg:$ShiftedRm, pred:$p,
                     cc_out:$s)>;
+
+// SSAT/USAT optional shift operand.
+def : t2InstAlias<"ssat${p} $Rd, $sat_imm, $Rn",
+                  (t2SSAT rGPR:$Rd, imm1_32:$sat_imm, rGPR:$Rn, 0, pred:$p)>;
+def : t2InstAlias<"usat${p} $Rd, $sat_imm, $Rn",
+                  (t2USAT rGPR:$Rd, imm0_31:$sat_imm, rGPR:$Rn, 0, pred:$p)>;
+

Modified: llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s?rev=139926&r1=139925&r2=139926&view=diff
==============================================================================
--- llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s (original)
+++ llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s Fri Sep 16 13:32:30 2011
@@ -2049,6 +2049,22 @@
 
 
 @------------------------------------------------------------------------------
+@ SSAT
+ at ------------------------------------------------------------------------------
+        ssat	r8, #1, r10
+        ssat	r8, #1, r10, lsl #0
+        ssat	r8, #1, r10, lsl #31
+        ssat	r8, #1, r10, asr #32
+        ssat	r8, #1, r10, asr #1
+
+@ CHECK: ssat	r8, #1, r10             @ encoding: [0x0a,0xf3,0x00,0x08]
+@ CHECK: ssat	r8, #1, r10             @ encoding: [0x0a,0xf3,0x00,0x08]
+@ CHECK: ssat	r8, #1, r10, lsl #31    @ encoding: [0x0a,0xf3,0xc0,0x78]
+@ CHECK: ssat	r8, #1, r10, asr #32    @ encoding: [0x2a,0xf3,0x00,0x08]
+@ CHECK: ssat	r8, #1, r10, asr #1     @ encoding: [0x2a,0xf3,0x40,0x08]
+
+
+ at ------------------------------------------------------------------------------
 @ SUB (register)
 @------------------------------------------------------------------------------
         sub.w r5, r2, r12, rrx