Properly pseudo-ize MOVCCr and MOVCCs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127434 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
index de87ec359d93204948609a74e61b6d91e788ccaa..4b9dd37f73022403f3fbab3e8641cbefb470a5e5 100644 (file)
--- a/lib/Target/ARM/ARMExpandPseudoInsts.cpp
+++ b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
@@ -708,6 +708,33 @@ bool ARMExpandPseudo::ExpandMI(MachineBasicBlock &MBB,
   switch (Opcode) {
     default:
       return false;
+    case ARM::MOVCCr: {
+      BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVr),
+              MI.getOperand(1).getReg())
+        .addReg(MI.getOperand(2).getReg(),
+                getKillRegState(MI.getOperand(2).isKill()))
+        .addImm(MI.getOperand(3).getImm()) // 'pred'
+        .addReg(MI.getOperand(4).getReg())
+        .addReg(0); // 's' bit
+
+      MI.eraseFromParent();
+      return true;
+    }
+    case ARM::MOVCCs: {
+      BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVs),
+              (MI.getOperand(1).getReg()))
+        .addReg(MI.getOperand(2).getReg(),
+                getKillRegState(MI.getOperand(2).isKill()))
+        .addReg(MI.getOperand(3).getReg(),
+                getKillRegState(MI.getOperand(3).isKill()))
+        .addImm(MI.getOperand(4).getImm())
+        .addImm(MI.getOperand(5).getImm()) // 'pred'
+        .addReg(MI.getOperand(6).getReg())
+        .addReg(0); // 's' bit
+
+      MI.eraseFromParent();
+      return true;
+    }
     case ARM::Int_eh_sjlj_dispatchsetup: {
       MachineFunction &MF = *MI.getParent()->getParent();
       const ARMBaseInstrInfo *AII =

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 6aad275086f52826b4948cc6621d0254469295ca..b586ea0a77a2938f319cde7fd7cb50a81a18ac7f 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -3152,32 +3152,15 @@ def BCCZi64 : PseudoInst<(outs),
 //        the normal MOV instructions. That would fix the dependency on
 //        special casing them in tblgen.
 let neverHasSideEffects = 1 in {
-def MOVCCr : AI1<0b1101, (outs GPR:$Rd), (ins GPR:$false, GPR:$Rm), DPFrm,
-                IIC_iCMOVr, "mov", "\t$Rd, $Rm",
-      [/*(set GPR:$Rd, (ARMcmov GPR:$false, GPR:$Rm, imm:$cc, CCR:$ccr))*/]>,
-                RegConstraint<"$false = $Rd">, UnaryDP {
-  bits<4> Rd;
-  bits<4> Rm;
-  let Inst{25} = 0;
-  let Inst{20} = 0;
-  let Inst{15-12} = Rd;
-  let Inst{11-4} = 0b00000000;
-  let Inst{3-0} = Rm;
-}
-
-def MOVCCs : AI1<0b1101, (outs GPR:$Rd),
-                 (ins GPR:$false, so_reg:$shift), DPSoRegFrm, IIC_iCMOVsr,
-                "mov", "\t$Rd, $shift",
-   [/*(set GPR:$Rd, (ARMcmov GPR:$false, so_reg:$shift, imm:$cc, CCR:$ccr))*/]>,
-                RegConstraint<"$false = $Rd">, UnaryDP {
-  bits<4> Rd;
-  bits<12> shift;
-  let Inst{25} = 0;
-  let Inst{20} = 0;
-  let Inst{19-16} = 0;
-  let Inst{15-12} = Rd;
-  let Inst{11-0} = shift;
-}
+def MOVCCr : ARMPseudoInst<(outs GPR:$Rd), (ins GPR:$false, GPR:$Rm, pred:$p),
+                           Size4Bytes, IIC_iCMOVr,
+  [/*(set GPR:$Rd, (ARMcmov GPR:$false, GPR:$Rm, imm:$cc, CCR:$ccr))*/]>,
+      RegConstraint<"$false = $Rd">;
+def MOVCCs : ARMPseudoInst<(outs GPR:$Rd),
+                           (ins GPR:$false, so_reg:$shift, pred:$p),
+                           Size4Bytes, IIC_iCMOVsr,
+  [/*(set GPR:$Rd, (ARMcmov GPR:$false, so_reg:$shift, imm:$cc, CCR:$ccr))*/]>,
+      RegConstraint<"$false = $Rd">;
 
 let isMoveImm = 1 in
 def MOVCCi16 : AI1<0b1000, (outs GPR:$Rd), (ins GPR:$false, i32imm_hilo16:$imm),

diff --git a/test/CodeGen/ARM/long_shift.ll b/test/CodeGen/ARM/long_shift.ll
index 5e4f5730f8d21ae38b44db3bc1324cf0fd8df3f5..ab14de10ca252a770077fe09feb08df5368c99b7 100644 (file)
--- a/test/CodeGen/ARM/long_shift.ll
+++ b/test/CodeGen/ARM/long_shift.ll
@@ -26,7 +26,7 @@ define i32 @f2(i64 %x, i64 %y) {
 ; CHECK-NEXT: rsb     r3, r2, #32
 ; CHECK-NEXT: subs    r2, r2, #32
 ; CHECK-NEXT: orr     r0, r0, r1, lsl r3
-; CHECK-NEXT: movge   r0, r1, asr r2
+; CHECK-NEXT: asrge   r0, r1, r2
        %a = ashr i64 %x, %y
        %b = trunc i64 %a to i32
        ret i32 %b
@@ -38,7 +38,7 @@ define i32 @f3(i64 %x, i64 %y) {
 ; CHECK-NEXT: rsb     r3, r2, #32
 ; CHECK-NEXT: subs    r2, r2, #32
 ; CHECK-NEXT: orr     r0, r0, r1, lsl r3
-; CHECK-NEXT: movge   r0, r1, lsr r2
+; CHECK-NEXT: lsrge   r0, r1, r2
        %a = lshr i64 %x, %y
        %b = trunc i64 %a to i32
        ret i32 %b

diff --git a/utils/TableGen/ARMDecoderEmitter.cpp b/utils/TableGen/ARMDecoderEmitter.cpp
index 53e1be12a41901a42bd8dc3dc6e9a083bbaf9fb6..9119219a444555b7bc497505c8c1b438e2e1edda 100644 (file)
--- a/utils/TableGen/ARMDecoderEmitter.cpp
+++ b/utils/TableGen/ARMDecoderEmitter.cpp
@@ -1606,13 +1606,12 @@ ARMDEBackend::populateInstruction(const CodeGenInstruction &CGI,
     // better off using the generic RSCri and RSCrs instructions.
     if (Name == "RSCSri" || Name == "RSCSrs") return false;
 
-    // MOVCCr, MOVCCs, MOVCCi, MOVCCi16, FCYPScc, FCYPDcc, FNEGScc, and
+    // MOVCCi, MOVCCi16, FCYPScc, FCYPDcc, FNEGScc, and
     // FNEGDcc are used in the compiler to implement conditional moves.
     // We can ignore them in favor of their more generic versions of
     // instructions. See also SDNode *ARMDAGToDAGISel::Select(SDValue Op).
-    if (Name == "MOVCCr"   || Name == "MOVCCs"  || Name == "MOVCCi" ||
-        Name == "MOVCCi16" || Name == "FCPYScc" || Name == "FCPYDcc" ||
-        Name == "FNEGScc"  || Name == "FNEGDcc")
+    if (Name == "MOVCCi"  || Name == "MOVCCi16" || Name == "FCPYScc" ||
+        Name == "FCPYDcc" || Name == "FNEGScc"  || Name == "FNEGDcc")
       return false;
 
     // Ditto for VMOVDcc, VMOVScc, VNEGDcc, and VNEGScc.