From 6ff1ef9931b50763a40e9ae8696cfab9e25cf4de Mon Sep 17 00:00:00 2001
From: Daniel Sanders <daniel.sanders@imgtec.com>
Date: Wed, 30 Oct 2013 14:45:14 +0000
Subject: [mips][msa] Added support for matching bins[lr]i.[bhwd] from normal
 IR (i.e. not intrinsics)

This required correcting the definition of the bins[lr]i intrinsics because
the result is also the first operand.

It also required removing the (arbitrary) check for 32-bit immediates in
MipsSEDAGToDAGISel::selectVSplat().

Currently using binsli.d with 2 bits set in the mask doesn't select binsli.d
because the constant is legalized into a ConstantPool. Similar things can
happen with binsri.d with more than 10 bits set in the mask. The resulting
code when this happens is correct but not optimal.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193687 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/MipsMSAInstrInfo.td | 61 +++++++++++++++++++++++++++----------
 1 file changed, 45 insertions(+), 16 deletions(-)

(limited to 'lib/Target/Mips/MipsMSAInstrInfo.td')

diff --git a/lib/Target/Mips/MipsMSAInstrInfo.td b/lib/Target/Mips/MipsMSAInstrInfo.td
index 65d85e34ee..a393fdc45e 100644
--- a/lib/Target/Mips/MipsMSAInstrInfo.td
+++ b/lib/Target/Mips/MipsMSAInstrInfo.td
@@ -315,6 +315,18 @@ def vsplati64_simm5 : SplatComplexPattern<vsplat_simm5, v2i64, 1,
 def vsplat_uimm_pow2 : ComplexPattern<vAny, 1, "selectVSplatUimmPow2",
                                       [build_vector, bitconvert]>;
 
+// Any build_vector that is a constant splat with only a consecutive sequence
+// of left-most bits set.
+def vsplat_maskl_bits : SplatComplexPattern<vsplat_uimm8, vAny, 1,
+                                            "selectVSplatMaskL",
+                                            [build_vector, bitconvert]>;
+
+// Any build_vector that is a constant splat with only a consecutive sequence
+// of right-most bits set.
+def vsplat_maskr_bits : SplatComplexPattern<vsplat_uimm8, vAny, 1,
+                                            "selectVSplatMaskR",
+                                            [build_vector, bitconvert]>;
+
 def fms : PatFrag<(ops node:$wd, node:$ws, node:$wt),
                   (fsub node:$wd, (fmul node:$ws, node:$wt))>;
 
@@ -1079,6 +1091,31 @@ class MSA_BIT_D_DESC_BASE<string instr_asm, SDPatternOperator OpNode,
   InstrItinClass Itinerary = itin;
 }
 
+class MSA_BIT_BINSXI_DESC_BASE<string instr_asm, ValueType Ty,
+                               ComplexPattern Mask, RegisterOperand ROWD,
+                               RegisterOperand ROWS = ROWD,
+                               InstrItinClass itin = NoItinerary> {
+  dag OutOperandList = (outs ROWD:$wd);
+  dag InOperandList = (ins ROWD:$wd_in, ROWS:$ws, vsplat_uimm8:$m);
+  string AsmString = !strconcat(instr_asm, "\t$wd, $ws, $m");
+  list<dag> Pattern = [(set ROWD:$wd, (vselect (Ty Mask:$m), (Ty ROWD:$wd_in),
+                                               ROWS:$ws))];
+  InstrItinClass Itinerary = itin;
+  string Constraints = "$wd = $wd_in";
+}
+
+class MSA_BIT_BINSLI_DESC_BASE<string instr_asm, ValueType Ty,
+                               RegisterOperand ROWD,
+                               RegisterOperand ROWS = ROWD,
+                               InstrItinClass itin = NoItinerary> :
+  MSA_BIT_BINSXI_DESC_BASE<instr_asm, Ty, vsplat_maskl_bits, ROWD, ROWS, itin>;
+
+class MSA_BIT_BINSRI_DESC_BASE<string instr_asm, ValueType Ty,
+                               RegisterOperand ROWD,
+                               RegisterOperand ROWS = ROWD,
+                               InstrItinClass itin = NoItinerary> :
+  MSA_BIT_BINSXI_DESC_BASE<instr_asm, Ty, vsplat_maskr_bits, ROWD, ROWS, itin>;
+
 class MSA_BIT_SPLAT_DESC_BASE<string instr_asm, SDPatternOperator OpNode,
                               SplatComplexPattern SplatImm,
                               RegisterOperand ROWD, RegisterOperand ROWS = ROWD,
@@ -1486,28 +1523,20 @@ class BINSL_H_DESC : MSA_3R_DESC_BASE<"binsl.h", int_mips_binsl_h, MSA128HOpnd>;
 class BINSL_W_DESC : MSA_3R_DESC_BASE<"binsl.w", int_mips_binsl_w, MSA128WOpnd>;
 class BINSL_D_DESC : MSA_3R_DESC_BASE<"binsl.d", int_mips_binsl_d, MSA128DOpnd>;
 
-class BINSLI_B_DESC : MSA_BIT_B_DESC_BASE<"binsli.b", int_mips_binsli_b,
-                                          MSA128BOpnd>;
-class BINSLI_H_DESC : MSA_BIT_H_DESC_BASE<"binsli.h", int_mips_binsli_h,
-                                          MSA128HOpnd>;
-class BINSLI_W_DESC : MSA_BIT_W_DESC_BASE<"binsli.w", int_mips_binsli_w,
-                                          MSA128WOpnd>;
-class BINSLI_D_DESC : MSA_BIT_D_DESC_BASE<"binsli.d", int_mips_binsli_d,
-                                          MSA128DOpnd>;
+class BINSLI_B_DESC : MSA_BIT_BINSLI_DESC_BASE<"binsli.b", v16i8, MSA128BOpnd>;
+class BINSLI_H_DESC : MSA_BIT_BINSLI_DESC_BASE<"binsli.h", v8i16, MSA128HOpnd>;
+class BINSLI_W_DESC : MSA_BIT_BINSLI_DESC_BASE<"binsli.w", v4i32, MSA128WOpnd>;
+class BINSLI_D_DESC : MSA_BIT_BINSLI_DESC_BASE<"binsli.d", v2i64, MSA128DOpnd>;
 
 class BINSR_B_DESC : MSA_3R_DESC_BASE<"binsr.b", int_mips_binsr_b, MSA128BOpnd>;
 class BINSR_H_DESC : MSA_3R_DESC_BASE<"binsr.h", int_mips_binsr_h, MSA128HOpnd>;
 class BINSR_W_DESC : MSA_3R_DESC_BASE<"binsr.w", int_mips_binsr_w, MSA128WOpnd>;
 class BINSR_D_DESC : MSA_3R_DESC_BASE<"binsr.d", int_mips_binsr_d, MSA128DOpnd>;
 
-class BINSRI_B_DESC : MSA_BIT_B_DESC_BASE<"binsri.b", int_mips_binsri_b,
-                                          MSA128BOpnd>;
-class BINSRI_H_DESC : MSA_BIT_H_DESC_BASE<"binsri.h", int_mips_binsri_h,
-                                          MSA128HOpnd>;
-class BINSRI_W_DESC : MSA_BIT_W_DESC_BASE<"binsri.w", int_mips_binsri_w,
-                                          MSA128WOpnd>;
-class BINSRI_D_DESC : MSA_BIT_D_DESC_BASE<"binsri.d", int_mips_binsri_d,
-                                          MSA128DOpnd>;
+class BINSRI_B_DESC : MSA_BIT_BINSRI_DESC_BASE<"binsri.b", v16i8, MSA128BOpnd>;
+class BINSRI_H_DESC : MSA_BIT_BINSRI_DESC_BASE<"binsri.h", v8i16, MSA128HOpnd>;
+class BINSRI_W_DESC : MSA_BIT_BINSRI_DESC_BASE<"binsri.w", v4i32, MSA128WOpnd>;
+class BINSRI_D_DESC : MSA_BIT_BINSRI_DESC_BASE<"binsri.d", v2i64, MSA128DOpnd>;
 
 class BMNZ_V_DESC : MSA_VEC_DESC_BASE<"bmnz.v", int_mips_bmnz_v, MSA128BOpnd>;
 
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