[llvm] [Test] Add and update tests for `lrint`/`llrint` (NFC) (PR #152662)

[Trevor Gross via llvm-commits]

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@@ -7,14 +7,50 @@
 ; RUN: llc < %s -mtriple=x86_64-unknown -mattr=avx | FileCheck %s --check-prefixes=X64,X64-AVX
 ; RUN: llc < %s -mtriple=x86_64-unknown -mattr=avx512f | FileCheck %s --check-prefixes=X64,X64-AVX
 
-define i64 @testmsxs(float %x) {
+define i64 @testmsxh(half %x) nounwind {
+; X86-NOSSE-LABEL: testmsxh:
+; X86-NOSSE:       # %bb.0: # %entry
+; X86-NOSSE-NEXT:    pushl %eax
+; X86-NOSSE-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-NOSSE-NEXT:    movl %eax, (%esp)
+; X86-NOSSE-NEXT:    calll __extendhfsf2
+; X86-NOSSE-NEXT:    fstps (%esp)
+; X86-NOSSE-NEXT:    calll llrintf
+; X86-NOSSE-NEXT:    popl %ecx
+; X86-NOSSE-NEXT:    retl
+;
+; X86-SSE2-LABEL: testmsxh:
+; X86-SSE2:       # %bb.0: # %entry
+; X86-SSE2-NEXT:    pushl %eax
+; X86-SSE2-NEXT:    pinsrw $0, {{[0-9]+}}(%esp), %xmm0
+; X86-SSE2-NEXT:    pextrw $0, %xmm0, %eax
+; X86-SSE2-NEXT:    movw %ax, (%esp)
+; X86-SSE2-NEXT:    calll __extendhfsf2
+; X86-SSE2-NEXT:    fstps (%esp)
+; X86-SSE2-NEXT:    calll llrintf
+; X86-SSE2-NEXT:    popl %ecx
+; X86-SSE2-NEXT:    retl
+;
+; X64-SSE-LABEL: testmsxh:
+; X64-SSE:       # %bb.0: # %entry
+; X64-SSE-NEXT:    pushq %rax
+; X64-SSE-NEXT:    callq __extendhfsf2 at PLT
+; X64-SSE-NEXT:    callq rintf at PLT
+; X64-SSE-NEXT:    callq __truncsfhf2 at PLT
+; X64-SSE-NEXT:    callq __extendhfsf2 at PLT
+; X64-SSE-NEXT:    cvttss2si %xmm0, %rax
+; X64-SSE-NEXT:    popq %rcx
+; X64-SSE-NEXT:    retq
+entry:
+  %0 = tail call i64 @llvm.llrint.f16(half %x)
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tgross35 wrote:

I have no idea either, unfortunately it's everywhere. Best I can figure out is the last two letters are int and float size and the first is some kind of rounding op identifier.

> Missing int type in name mangling

Meaning the intrinsic `llvm.llrint.i64.f16` rather than `llvm.llrint.f16`? I was just being consistent with the rest of this file. Can add it to all tests here if you prefer.

https://github.com/llvm/llvm-project/pull/152662