[llvm] [X86][GlobalIsel] Support G_INTRINSIC_TRUNC/G_FCEIL/G_FFLOOR (PR #156633)

[via llvm-commits]

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@@ -18,18 +18,12 @@ define float @floor_f32(float %a) nounwind readnone {
 ; FASTISEL-X64-NEXT:    popq %rax
 ; FASTISEL-X64-NEXT:    retq
 ;
-; X86-LABEL: floor_f32:
-; X86:       # %bb.0:
-; X86-NEXT:    subl $12, %esp
-; X86-NEXT:    flds {{[0-9]+}}(%esp)
-; X86-NEXT:    fstps (%esp)
-; X86-NEXT:    calll floorf
-; X86-NEXT:    addl $12, %esp
-; X86-NEXT:    retl
-;
 ; GISEL-X64-LABEL: floor_f32:
 ; GISEL-X64:       # %bb.0:
-; GISEL-X64-NEXT:    jmp floorf at PLT # TAILCALL
+; GISEL-X64-NEXT:    pushq %rax
+; GISEL-X64-NEXT:    callq floorf
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JaydeepChauhan14 wrote:

@mahesh-attarde please update gisel runline with ```-global-isel-abort=1``.

https://github.com/llvm/llvm-project/pull/156633