[llvm] [LoongArch] Use LSX for scalar FP rounding with explicit rounding mode (PR #114766)

[via llvm-commits]

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@@ -0,0 +1,123 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc --mtriple=loongarch64 --mattr=+lsx < %s | FileCheck %s
+
+;; ceilf
+define float @ceil_f32(float %i) nounwind {
+; CHECK-LABEL: ceil_f32:
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zhaoqi5 wrote:

Thanks for your review!
You are right. Without this commit, `llvm.{ceil/floor/trunc/roundeven}` intrinsics were expanded at the loongarch backend. A call to the function in libm was generated.

https://github.com/llvm/llvm-project/pull/114766