llvmorg-github-actions[bot] wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-hexagon

Author: Ikhlas Ajbar (iajbar)

<details>
<summary>Changes</summary>

Declaring VF0-VF15 as an artificial (vsub_fake) third sub-register of W0-W15 
caused MachineCopyPropagation to associate DBG_VALUEs of $wN with unrelated $vM 
COPYs via reg-unit overlap, tripping the hasDebugOperandForReg assertion in 
updateDbgUsersToReg.

Remove the fake sub-register from W0-W15. The reverse-alias WR0-WR15 keep 
vsub_fake intentionally.

---

Patch is 28.90 KiB, truncated to 20.00 KiB below, full version: 
https://github.com/llvm/llvm-project/pull/208021.diff


2 Files Affected:

- (modified) llvm/lib/Target/Hexagon/HexagonRegisterInfo.td (+23-17) 
- (added) llvm/test/CodeGen/Hexagon/pr183850.ll (+152) 


``````````diff
diff --git a/llvm/lib/Target/Hexagon/HexagonRegisterInfo.td 
b/llvm/lib/Target/Hexagon/HexagonRegisterInfo.td
index 3a77fcd04e35c..5ea2197fb71b0 100644
--- a/llvm/lib/Target/Hexagon/HexagonRegisterInfo.td
+++ b/llvm/lib/Target/Hexagon/HexagonRegisterInfo.td
@@ -228,23 +228,29 @@ let Namespace = "Hexagon" in {
   def VTMP : Ri<0, "vtmp">, DwarfRegNum<[131]>;
 
   // Aliases of the V* registers used to hold double vec values.
-  let SubRegIndices = [vsub_lo, vsub_hi, vsub_fake], CoveredBySubRegs = 1 in {
-  def W0  : Rd< 0,  "v1:0",  [V0,  V1, VF0]>,  DwarfRegNum<[99]>;
-  def W1  : Rd< 2,  "v3:2",  [V2,  V3, VF1]>,  DwarfRegNum<[101]>;
-  def W2  : Rd< 4,  "v5:4",  [V4,  V5, VF2]>,  DwarfRegNum<[103]>;
-  def W3  : Rd< 6,  "v7:6",  [V6,  V7, VF3]>,  DwarfRegNum<[105]>;
-  def W4  : Rd< 8,  "v9:8",  [V8,  V9, VF4]>,  DwarfRegNum<[107]>;
-  def W5  : Rd<10, "v11:10", [V10, V11, VF5]>, DwarfRegNum<[109]>;
-  def W6  : Rd<12, "v13:12", [V12, V13, VF6]>, DwarfRegNum<[111]>;
-  def W7  : Rd<14, "v15:14", [V14, V15, VF7]>, DwarfRegNum<[113]>;
-  def W8  : Rd<16, "v17:16", [V16, V17, VF8]>, DwarfRegNum<[115]>;
-  def W9  : Rd<18, "v19:18", [V18, V19, VF9]>, DwarfRegNum<[117]>;
-  def W10 : Rd<20, "v21:20", [V20, V21, VF10]>, DwarfRegNum<[119]>;
-  def W11 : Rd<22, "v23:22", [V22, V23, VF11]>, DwarfRegNum<[121]>;
-  def W12 : Rd<24, "v25:24", [V24, V25, VF12]>, DwarfRegNum<[123]>;
-  def W13 : Rd<26, "v27:26", [V26, V27, VF13]>, DwarfRegNum<[125]>;
-  def W14 : Rd<28, "v29:28", [V28, V29, VF14]>, DwarfRegNum<[127]>;
-  def W15 : Rd<30, "v31:30", [V30, V31, VF15]>, DwarfRegNum<[129]>;
+  // VF[0-15] registers are intentionally not listed as sub-registers of
+  // W0-W15 here: doing so would introduce artificial (fake) sub-register
+  // regunit sharing that misleads generic passes such as MachineCopy-
+  // Propagation into treating DBG_VALUEs of $wN as users of unrelated
+  // $vM COPYs, tripping the hasDebugOperandForReg assertion in
+  // updateDbgUsersToReg.
+  let SubRegIndices = [vsub_lo, vsub_hi], CoveredBySubRegs = 1 in {
+  def W0  : Rd< 0,  "v1:0",  [V0,  V1]>,  DwarfRegNum<[99]>;
+  def W1  : Rd< 2,  "v3:2",  [V2,  V3]>,  DwarfRegNum<[101]>;
+  def W2  : Rd< 4,  "v5:4",  [V4,  V5]>,  DwarfRegNum<[103]>;
+  def W3  : Rd< 6,  "v7:6",  [V6,  V7]>,  DwarfRegNum<[105]>;
+  def W4  : Rd< 8,  "v9:8",  [V8,  V9]>,  DwarfRegNum<[107]>;
+  def W5  : Rd<10, "v11:10", [V10, V11]>, DwarfRegNum<[109]>;
+  def W6  : Rd<12, "v13:12", [V12, V13]>, DwarfRegNum<[111]>;
+  def W7  : Rd<14, "v15:14", [V14, V15]>, DwarfRegNum<[113]>;
+  def W8  : Rd<16, "v17:16", [V16, V17]>, DwarfRegNum<[115]>;
+  def W9  : Rd<18, "v19:18", [V18, V19]>, DwarfRegNum<[117]>;
+  def W10 : Rd<20, "v21:20", [V20, V21]>, DwarfRegNum<[119]>;
+  def W11 : Rd<22, "v23:22", [V22, V23]>, DwarfRegNum<[121]>;
+  def W12 : Rd<24, "v25:24", [V24, V25]>, DwarfRegNum<[123]>;
+  def W13 : Rd<26, "v27:26", [V26, V27]>, DwarfRegNum<[125]>;
+  def W14 : Rd<28, "v29:28", [V28, V29]>, DwarfRegNum<[127]>;
+  def W15 : Rd<30, "v31:30", [V30, V31]>, DwarfRegNum<[129]>;
   }
 
   // Reverse Aliases of the V* registers used to hold double vec values.
diff --git a/llvm/test/CodeGen/Hexagon/pr183850.ll 
b/llvm/test/CodeGen/Hexagon/pr183850.ll
new file mode 100644
index 0000000000000..030a3e89a079e
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/pr183850.ll
@@ -0,0 +1,152 @@
+; RUN: llc -mtriple=hexagon-unknown-linux-musl -mcpu=hexagonv68 \
+; RUN:     -mattr=+hvxv68,+hvx-length128b -O2 -relocation-model=pic \
+; RUN:     -frame-pointer=all -hexagon-small-data-threshold=0 \
+; RUN:     -machine-sink-split=0 < %s -o /dev/null
+
+; This testcase previously tripped the
+; MachineRegisterInfo::updateDbgUsersToReg assertion
+;   "Expected debug value to have some overlap with OldReg"
+; during Machine Copy Propagation. The root cause was that W0-W15 had
+; VF0-VF15 listed as an artificial (vsub_fake) sub-register, which
+; caused MCP to associate DBG_VALUEs of $wN with unrelated $vM copies
+; through reg-unit overlap.
+
+define void @test(ptr %kernel, ptr %arrayidx, <32 x i32> %0) !dbg !3 {
+entry:
+  %1 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %0, <32 
x i32> zeroinitializer, i32 0)
+  %2 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %0, i32 0)
+  %3 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> splat 
(i32 1), <32 x i32> zeroinitializer, i32 0)
+  %4 = load <32 x i32>, ptr null, align 128
+  %5 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %4, <32 
x i32> zeroinitializer, i32 0)
+  %6 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> zeroinitializer, i32 0)
+  %arrayidx77 = getelementptr i8, ptr %kernel, i32 3456
+  %7 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> zeroinitializer, i32 1)
+  %e0 = shufflevector <64 x i32> %1, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %8 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e0, i32 0)
+  %e1 = shufflevector <64 x i32> %1, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %9 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e1, i32 0)
+  %e2 = shufflevector <64 x i32> %2, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e3 = shufflevector <64 x i32> %2, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %10 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e3, i32 0)
+  %e4 = shufflevector <64 x i32> %3, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e6 = shufflevector <64 x i32> %3, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %11 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e6, 
<32 x i32> zeroinitializer, i32 0)
+  %e8 = shufflevector <64 x i32> %5, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %12 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e8, i32 0)
+  %e9 = shufflevector <64 x i32> %5, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %13 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e9, i32 0)
+  %e12 = shufflevector <64 x i32> %6, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %e14 = shufflevector <64 x i32> %6, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %14 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e14, i32 0)
+  %15 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e12, i32 0)
+  %e16 = shufflevector <64 x i32> %7, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e18 = shufflevector <64 x i32> %7, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %16 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e18, 
<32 x i32> zeroinitializer, i32 0)
+    #dbg_value(<64 x i32> %16, !16, !DIExpression(), !17)
+  %17 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> zeroinitializer, i32 -8)
+  %e21 = shufflevector <64 x i32> %8, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %18 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e2, 
<32 x i32> %e21, i32 0)
+  %e23 = shufflevector <64 x i32> %8, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %19 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e2, 
<32 x i32> %e23, i32 0)
+  %e24 = shufflevector <64 x i32> %10, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e25 = shufflevector <64 x i32> %9, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %20 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e24, 
<32 x i32> %e25, i32 0)
+  %e26 = shufflevector <64 x i32> %10, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %e27 = shufflevector <64 x i32> %9, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %21 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e26, 
<32 x i32> %e27, i32 0)
+  %e28 = shufflevector <64 x i32> %12, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %22 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e28, 
<32 x i32> %e4, i32 0)
+  %e30 = shufflevector <64 x i32> %12, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %23 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e30, 
<32 x i32> %e4, i32 0)
+  %e32 = shufflevector <64 x i32> %13, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e33 = shufflevector <64 x i32> %11, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %24 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e32, 
<32 x i32> %e33, i32 0)
+  %e34 = shufflevector <64 x i32> %13, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %e35 = shufflevector <64 x i32> %11, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %25 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e34, 
<32 x i32> %e35, i32 0)
+  %e36 = shufflevector <64 x i32> %14, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %26 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e36, 
<32 x i32> %e0, i32 0)
+  %e38 = shufflevector <64 x i32> %14, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %27 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e38, 
<32 x i32> %e1, i32 0)
+  %e42 = shufflevector <64 x i32> %15, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %28 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e42, 
<32 x i32> %e12, i32 0)
+  %29 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> 
zeroinitializer, <32 x i32> %e16, i32 -16)
+  %e46 = shufflevector <64 x i32> %17, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e47 = shufflevector <64 x i32> %16, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %30 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e46, 
<32 x i32> %e47, i32 0)
+  %e48 = shufflevector <64 x i32> %17, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %e49 = shufflevector <64 x i32> %16, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %31 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e48, 
<32 x i32> %e49, i32 0)
+  %e50 = shufflevector <64 x i32> %22, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e51 = shufflevector <64 x i32> %18, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %32 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e50, 
<32 x i32> %e51, i32 0)
+  %e52 = shufflevector <64 x i32> %23, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %e53 = shufflevector <64 x i32> %19, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %33 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e52, 
<32 x i32> %e53, i32 0)
+  %e54 = shufflevector <64 x i32> %24, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %e55 = shufflevector <64 x i32> %20, <64 x i32> zeroinitializer, <32 x i32> 
<i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 
41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 
51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 
61, i32 62, i32 63>
+  %34 = tail call <64 x i32> @llvm.hexagon.V6.vshuffvdd.128B(<32 x i32> %e54, 
<32 x i32> %e55, i32 0)
+  %e56 = shufflevector <64 x i32> %25, <64 x i32> zeroinitializer, <32 x i32> 
<i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, 
i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, 
i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, 
i32 31>
+  %e57 = shufflevector <64 x i32> %21, <64 x i32> z...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/208021
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