[llvm] [X86][GlobalISel] Support G_FCMP for scalar cases (PR #123598)

[via llvm-commits]

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+# NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+# NOTE: This MIR test is required because the support for 64 bit memory ops is missing in i686 mode, Due to distinction between float/int types, support is expected in near future and there is this RFC in place https://discourse.llvm.org/t/rfc-globalisel-adding-fp-type-information-to-llt/83349. Once this support is introduced this test must be dropped and integrated into the LLVM IR tests.
+# RUN: llc -O2 -mtriple=i686-linux-gnu -mattr=+x87,-sse,-sse2 -start-after=legalizer -disable-gisel-legality-check -global-isel -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes GISEL-X86
+
+--- |
+  ; ModuleID = 'c2.ll'
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mahesh-attarde wrote:

done.

https://github.com/llvm/llvm-project/pull/123598