[llvm] [RISCV] Incorporate scalar addends to extend vector multiply accumulate chains (PR #168660)

[Ryan Buchner via llvm-commits]

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@@ -0,0 +1,143 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=riscv64 -mattr=+m,+v < %s | FileCheck %s
+
+define i32 @madd_scalar(i32 %m00, i32 %m01, i32 %m10, i32 %m11) nounwind {
+; CHECK-LABEL: madd_scalar:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    mul a0, a0, a1
+; CHECK-NEXT:    mul a1, a2, a3
+; CHECK-NEXT:    add a0, a0, a1
+; CHECK-NEXT:    addiw a0, a0, 32
+; CHECK-NEXT:    ret
+entry:
+  %mul0 = mul nsw i32 %m00, %m01
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bababuck wrote:

Removed.

https://github.com/llvm/llvm-project/pull/168660