[llvm] [RISCV] Start vslide1down sequence with a dependency breaking splat (PR #72691)

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git-clang-format --diff 208a4510d4151b44fc97edadd839ff800f9f5049 c52fd6bfbac6a3c567866f9a534d87238e22b599 -- llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 2c7f274847..5d9a730911 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -16556,34 +16556,32 @@ RISCVTargetLowering::EmitInstrWithCustomInserter(MachineInstr &MI,
 
 #define PseudoVFCVT_RM_CASE(RMOpc, Opc)                                        \
   PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M1)                                     \
-  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M2)                                     \
-  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M4)                                     \
-  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, MF2)                                    \
-  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, MF4)
+      PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M2)                                 \
+          PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M4)                             \
+              PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, MF2)                        \
+                  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, MF4)
 
 #define PseudoVFCVT_RM_CASE_M8(RMOpc, Opc)                                     \
-  PseudoVFCVT_RM_CASE(RMOpc, Opc)                                              \
-  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M8)
+  PseudoVFCVT_RM_CASE(RMOpc, Opc) PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, M8)
 
 #define PseudoVFCVT_RM_CASE_MF8(RMOpc, Opc)                                    \
-  PseudoVFCVT_RM_CASE(RMOpc, Opc)                                              \
-  PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, MF8)
-
-  // VFCVT
-  PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_X_F_V, PseudoVFCVT_X_F_V)
-  PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_XU_F_V, PseudoVFCVT_XU_F_V)
-  PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_F_XU_V, PseudoVFCVT_F_XU_V)
-  PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_F_X_V, PseudoVFCVT_F_X_V)
-
-  // VFWCVT
-  PseudoVFCVT_RM_CASE(PseudoVFWCVT_RM_XU_F_V, PseudoVFWCVT_XU_F_V);
-  PseudoVFCVT_RM_CASE(PseudoVFWCVT_RM_X_F_V, PseudoVFWCVT_X_F_V);
-
-  // VFNCVT
-  PseudoVFCVT_RM_CASE_MF8(PseudoVFNCVT_RM_XU_F_W, PseudoVFNCVT_XU_F_W);
-  PseudoVFCVT_RM_CASE_MF8(PseudoVFNCVT_RM_X_F_W, PseudoVFNCVT_X_F_W);
-  PseudoVFCVT_RM_CASE(PseudoVFNCVT_RM_F_XU_W, PseudoVFNCVT_F_XU_W);
-  PseudoVFCVT_RM_CASE(PseudoVFNCVT_RM_F_X_W, PseudoVFNCVT_F_X_W);
+  PseudoVFCVT_RM_CASE(RMOpc, Opc) PseudoVFCVT_RM_LMUL_CASE(RMOpc, Opc, MF8)
+
+    // VFCVT
+    PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_X_F_V, PseudoVFCVT_X_F_V)
+        PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_XU_F_V, PseudoVFCVT_XU_F_V)
+            PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_F_XU_V, PseudoVFCVT_F_XU_V)
+                PseudoVFCVT_RM_CASE_M8(PseudoVFCVT_RM_F_X_V, PseudoVFCVT_F_X_V)
+
+        // VFWCVT
+        PseudoVFCVT_RM_CASE(PseudoVFWCVT_RM_XU_F_V, PseudoVFWCVT_XU_F_V);
+    PseudoVFCVT_RM_CASE(PseudoVFWCVT_RM_X_F_V, PseudoVFWCVT_X_F_V);
+
+    // VFNCVT
+    PseudoVFCVT_RM_CASE_MF8(PseudoVFNCVT_RM_XU_F_W, PseudoVFNCVT_XU_F_W);
+    PseudoVFCVT_RM_CASE_MF8(PseudoVFNCVT_RM_X_F_W, PseudoVFNCVT_X_F_W);
+    PseudoVFCVT_RM_CASE(PseudoVFNCVT_RM_F_XU_W, PseudoVFNCVT_F_XU_W);
+    PseudoVFCVT_RM_CASE(PseudoVFNCVT_RM_F_X_W, PseudoVFNCVT_F_X_W);
 
   case RISCV::PseudoVFROUND_NOEXCEPT_V_M1_MASK:
     return emitVFROUND_NOEXCEPT_MASK(MI, BB, RISCV::PseudoVFCVT_X_F_V_M1_MASK,

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https://github.com/llvm/llvm-project/pull/72691