[llvm] [RISCV] Increase default tail duplication threshold to 6 at -O3 (PR #98873)

[Craig Topper via llvm-commits]

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@@ -0,0 +1,79 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv64 -mattr=+m -O2 < %s | FileCheck %s --check-prefix=CHECK-O2
+; RUN: llc -mtriple=riscv64 -mattr=+m -O3 < %s | FileCheck %s --check-prefix=CHECK-O3
+
+; RUN: llc -mtriple=riscv64 -mattr=+m -tail-dup-size=4 < %s | FileCheck %s --check-prefix=CHECK-O2
+; RUN: llc -mtriple=riscv64 -mattr=+m -tail-dup-placement-threshold=4 < %s | FileCheck %s --check-prefix=CHECK-O2
+; RUN: llc -mtriple=riscv64 -mattr=+m -tail-dup-placement-threshold=6 < %s | FileCheck %s --check-prefix=CHECK-O3
+
+ at a = external dso_local local_unnamed_addr global i32
+ at b = external dso_local local_unnamed_addr global i32
+ at c = external dso_local local_unnamed_addr global i32
+
+declare i32 @foo(i32)
+
+define dso_local i32 @test(i32 %n) {
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topperc wrote:

Do we need dso_local and local_unnamed_addr?

https://github.com/llvm/llvm-project/pull/98873