[llvm] [AMDGPU][True16][MC] VINTERP instructions supporting true16/fake16 (PR #113634)

[Ivan Kosarev via llvm-commits]

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@@ -83,44 +85,63 @@ def VOP3_VINTERP_F32 : VOPProfile<[f32, f32, f32, f32]> {
   let Asm64 = " $vdst, $src0_modifiers, $src1_modifiers, $src2_modifiers$clamp$waitexp";
 }
 
-class VOP3_VINTERP_F16 <list<ValueType> ArgVT> : VOPProfile<ArgVT> {
-  let HasOpSel = 1;
-  let HasModifiers = 1;
+class VOP3_VINTERP_F16_t16 <list<ValueType> ArgVT> : VOPProfile_True16<VOPProfile<ArgVT>> {
+  let Src0Mod = FPT16VRegInputMods</*Fake16*/0>;
+  let Src1Mod = FPVRegInputMods;
+  let Src2Mod = !if(!eq(ArgVT[3].Size, 16), FPT16VRegInputMods</*Fake16*/0>,
+                                            FPVRegInputMods);
+  let Ins64 = (ins Src0Mod:$src0_modifiers, VRegSrc_16:$src0,
+                   Src1Mod:$src1_modifiers, VRegSrc_32:$src1,
+                   Src2Mod:$src2_modifiers,
+                   !if(!eq(ArgVT[3].Size, 16), VRegSrc_16, VRegSrc_32):$src2,
+                   Clamp:$clamp, op_sel0:$op_sel,
+                   WaitEXP:$waitexp);
 
-  let Src0Mod = FPVRegInputMods;
+  let Asm64 = "$vdst, $src0_modifiers, $src1_modifiers, $src2_modifiers$clamp$op_sel$waitexp";
+}
+
+class VOP3_VINTERP_F16_fake16 <list<ValueType> ArgVT> : VOPProfile_Fake16<VOPProfile<ArgVT>> {
+  let Src0Mod = FPT16VRegInputMods</*Fake16*/1>;
   let Src1Mod = FPVRegInputMods;
-  let Src2Mod = FPVRegInputMods;
+  let Src2Mod = !if(!eq(ArgVT[3].Size, 16), FPT16VRegInputMods</*Fake16*/1>,
+                                            FPVRegInputMods);
 
-  let Outs64 = (outs VGPR_32:$vdst);
-  let Ins64 = (ins Src0Mod:$src0_modifiers, VRegSrc_32:$src0,
+  let Ins64 = (ins Src0Mod:$src0_modifiers, VRegSrc_fake16:$src0,
                    Src1Mod:$src1_modifiers, VRegSrc_32:$src1,
-                   Src2Mod:$src2_modifiers, VRegSrc_32:$src2,
+                   Src2Mod:$src2_modifiers,
+                   !if(!eq(ArgVT[3].Size, 16), VRegSrc_fake16, VRegSrc_32):$src2,
                    Clamp:$clamp, op_sel0:$op_sel,
                    WaitEXP:$waitexp);
 
-  let Asm64 = " $vdst, $src0_modifiers, $src1_modifiers, $src2_modifiers$clamp$op_sel$waitexp";
-}
+  let Asm64 = "$vdst, $src0_modifiers, $src1_modifiers, $src2_modifiers$clamp$op_sel$waitexp";
+ }
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kosarev wrote:

Unintended change adding the space?

https://github.com/llvm/llvm-project/pull/113634