[llvm] [X86][NFC] Moved/Updated llvm.set.rounding testcases (PR #155434)

[Simon Pilgrim via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=-sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=NOSSE,SDAG-X86-NOSSE
+; RUN: llc -mtriple=i686-unknown-linux-gnu -global-isel=1 -global-isel-abort=2 -mattr=-sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=NOSSE,GISEL-X86-NOSSE
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RKSimon wrote:

might as well rename it isel-llvm.set.rounding.ll and match the isel test coverage in the other isel-* test files

https://github.com/llvm/llvm-project/pull/155434