[llvm] [RISCV] Add branch folding before branch relaxation (PR #134760)

[Luke Lau via llvm-commits]

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@@ -35,13 +33,12 @@ define void @copyprop_after_mbp(i32 %v, ptr %a, ptr %b, ptr %c, ptr %d) {
 ; PROP-NEXT:    sw a0, 0(a2)
 ; PROP-NEXT:    li a0, 1
 ; PROP-NEXT:    sw a0, 0(a1)
-; PROP-NEXT:    li a0, 12
-; PROP-NEXT:    sw a0, 0(a4)
-; PROP-NEXT:    ret
+; PROP-NEXT:    j .LBB0_3
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lukel97 wrote:

How does this end up happening? I thought this pass ran after tail duplication

https://github.com/llvm/llvm-project/pull/134760