[llvm] [RISCV] Vectorize phi for loop carried @llvm.vector.reduce.fadd (PR #78244)

[via llvm-commits]

github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff a02a0e806fab01f4cf4307443cdaed76a2488752 c19b05b67233a8ce0a1feed27d2208e1bc16dce3 -- llvm/lib/Target/RISCV/RISCVCodeGenPrepare.cpp
``````````

</details>

<details>
<summary>
View the diff from clang-format here.
</summary>

``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVCodeGenPrepare.cpp b/llvm/lib/Target/RISCV/RISCVCodeGenPrepare.cpp
index 9f7486fc7d..c7e9b68171 100644
--- a/llvm/lib/Target/RISCV/RISCVCodeGenPrepare.cpp
+++ b/llvm/lib/Target/RISCV/RISCVCodeGenPrepare.cpp
@@ -20,8 +20,8 @@
 #include "llvm/CodeGen/TargetPassConfig.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/InstVisitor.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/IR/Intrinsics.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 
 using namespace llvm;
@@ -121,15 +121,17 @@ bool RISCVCodeGenPrepare::visitAnd(BinaryOperator &BO) {
 //
 // loop:
 // %phi = phi <float> [ ..., %entry ], [ %acc, %loop]
-// %acc = call float @llvm.vector.reduce.fadd.nxv4f32(float %phi, <vscale x 2 x float> %vec)
+// %acc = call float @llvm.vector.reduce.fadd.nxv4f32(float %phi, <vscale x 2 x
+// float> %vec)
 //
 // ->
 //
 // loop:
 // %phi = phi <vscale x 2 x float> [ ..., %entry ], [ %acc.vec, %loop]
 // %phi.scalar = extractelement <vscale x 2 x float> %phi, i64 0
-// %acc = call float @llvm.vector.reduce.fadd.nxv4f32(float %x, <vscale x 2 x float> %vec)
-// %acc.vec = insertelement <vscale x 2 x float> poison, float %acc.next, i64 0
+// %acc = call float @llvm.vector.reduce.fadd.nxv4f32(float %x, <vscale x 2 x
+// float> %vec) %acc.vec = insertelement <vscale x 2 x float> poison, float
+// %acc.next, i64 0
 //
 // Which eliminates the scalar -> vector -> scalar crossing during instruction
 // selection.

``````````

</details>


https://github.com/llvm/llvm-project/pull/78244