ARM assembler support for vpush/vpop.

Add aliases for the vpush/vpop mnemonics to the VFP load/store multiple
writeback instructions w/ SP as the base pointer.

rdar://9683231

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133932 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMInstrVFP.td b/lib/Target/ARM/ARMInstrVFP.td
index b4c323998dbb985388312769e40ed03a0a27bcd4..d2aaa97b2bb0769e7081cba6ba763d7ae9c74b76 100644 (file)
--- a/lib/Target/ARM/ARMInstrVFP.td
+++ b/lib/Target/ARM/ARMInstrVFP.td
@@ -166,6 +166,15 @@ defm VSTM : vfp_ldst_mult<"vstm", 0, IIC_fpLoad_m, IIC_fpLoad_mu>;
 def : MnemonicAlias<"vldm", "vldmia">;
 def : MnemonicAlias<"vstm", "vstmia">;
 
+def : InstAlias<"vpush${p} $r", (VSTMDDB_UPD SP, pred:$p, dpr_reglist:$r)>,
+                Requires<[HasVFP2]>;
+def : InstAlias<"vpush${p} $r", (VSTMSDB_UPD SP, pred:$p, spr_reglist:$r)>,
+                Requires<[HasVFP2]>;
+def : InstAlias<"vpop${p} $r",  (VLDMDIA_UPD SP, pred:$p, dpr_reglist:$r)>,
+                Requires<[HasVFP2]>;
+def : InstAlias<"vpop${p} $r",  (VLDMSIA_UPD SP, pred:$p, spr_reglist:$r)>,
+                Requires<[HasVFP2]>;
+
 // FLDMX, FSTMX - mixing S/D registers for pre-armv6 cores
 
 //===----------------------------------------------------------------------===//

diff --git a/test/MC/ARM/vpush-vpop.s b/test/MC/ARM/vpush-vpop.s
new file mode 100644 (file)
index 0000000..1212c83
--- /dev/null
+++ b/test/MC/ARM/vpush-vpop.s
@@ -0,0 +1,19 @@
+@ RUN: llvm-mc -triple armv7-unknown-unknown -show-encoding < %s | FileCheck --check-prefix=CHECK-ARM %s
+@ RUN: llvm-mc -triple thumbv7-unknown-unknown -show-encoding < %s | FileCheck --check-prefix=CHECK-THUMB %s
+
+foo:
+@ CHECK: foo
+ vpush {d8, d9, d10, d11, d12}
+ vpush {s8, s9, s10, s11, s12}
+ vpop  {d8, d9, d10, d11, d12}
+ vpop  {s8, s9, s10, s11, s12}
+
+@ CHECK-THUMB: vpush {d8, d9, d10, d11, d12} @ encoding: [0x2d,0xed,0x0a,0x8b]
+@ CHECK-THUMB: vpush {s8, s9, s10, s11, s12} @ encoding: [0x2d,0xed,0x05,0x4a]
+@ CHECK-THUMB: vpop  {d8, d9, d10, d11, d12} @ encoding: [0xbd,0xec,0x0a,0x8b]
+@ CHECK-THUMB: vpop  {s8, s9, s10, s11, s12} @ encoding: [0xbd,0xec,0x05,0x4a]
+
+@ CHECK-ARM: vpush {d8, d9, d10, d11, d12} @ encoding: [0x0a,0x8b,0x2d,0xed]
+@ CHECK-ARM: vpush {s8, s9, s10, s11, s12} @ encoding: [0x05,0x4a,0x2d,0xed]
+@ CHECK-ARM: vpop  {d8, d9, d10, d11, d12} @ encoding: [0x0a,0x8b,0xbd,0xec]
+@ CHECK-ARM: vpop  {s8, s9, s10, s11, s12} @ encoding: [0x05,0x4a,0xbd,0xec]