[llvm] [RISCV] Fold subtraction if above threshold to Zbb `minu` (PR #134235)

[Piotr Fusik via llvm-commits]

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@@ -1823,20 +1814,22 @@ define i128 @sub_if_uge_i128(i128 %x, i128 %y) {
 ;
 ; RV64ZBB-LABEL: sub_if_uge_i128:
 ; RV64ZBB:       # %bb.0:
+; RV64ZBB-NEXT:    sltu a4, a0, a2
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pfusik wrote:

Ditto.

https://github.com/llvm/llvm-project/pull/134235