[llvm] [WIP][SPARC][IAS] Implement Solaris Natural Instruction extension (PR #170794)

[via llvm-commits]

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@@ -0,0 +1,42 @@
+! RUN: llvm-mc %s -triple=sparc   -mcpu=v9 -show-encoding | FileCheck %s --check-prefixes=SPARC32
+! RUN: llvm-mc %s -triple=sparcv9 -mcpu=v9 -show-encoding | FileCheck %s --check-prefixes=SPARC64
+
+!! Solaris Natural Instructions.
+
+! SPARC32: .word	305419896
+! SPARC64: .xword	305419896
+.nword 0x12345678
+
+! SPARC32: ld [%o0+8], %g1                         ! encoding: [0xc2,0x02,0x20,0x08]
+! SPARC64: ldx [%o0+8], %g1                        ! encoding: [0xc2,0x5a,0x20,0x08]
+ldn [%o0 + 8], %g1
+! SPARC32: st %g1, [%o0+8]                         ! encoding: [0xc2,0x22,0x20,0x08]
+! SPARC64: stx %g1, [%o0+8]                        ! encoding: [0xc2,0x72,0x20,0x08]
+stn %g1, [%o0 + 8]
+! SPARC32: lda [%o0] #ASI_AIUP, %g1                ! encoding: [0xc2,0x82,0x02,0x00]
+! SPARC64: ldxa [%o0] #ASI_AIUP, %g1               ! encoding: [0xc2,0xda,0x02,0x00]
+ldna [%o0] 0x10, %g1
+! SPARC32: sta %g1, [%o0] #ASI_AIUP                ! encoding: [0xc2,0xa2,0x02,0x00]
+! SPARC64: stxa %g1, [%o0] #ASI_AIUP               ! encoding: [0xc2,0xf2,0x02,0x00]
+stna %g1, [%o0] 0x10
+! SPARC32: cas	[%o0], %g0, %g1                    ! encoding: [0xc3,0xe2,0x10,0x00]
+! SPARC64: casx	[%o0], %g0, %g1                    ! encoding: [0xc3,0xf2,0x10,0x00]
+casn [%o0], %g0, %g1
+! SPARC32: sll %g0, %g1, %g2                       ! encoding: [0x85,0x28,0x00,0x01]
+! SPARC64: sllx %g0, %g1, %g2                      ! encoding: [0x85,0x28,0x10,0x01]
+slln %g0, %g1, %g2
+! SPARC32: srl %g0, %g1, %g2                       ! encoding: [0x85,0x30,0x00,0x01]
+! SPARC64: srlx %g0, %g1, %g2                      ! encoding: [0x85,0x30,0x10,0x01]
+srln %g0, %g1, %g2
+! SPARC32: sra %g0, %g1, %g2                       ! encoding: [0x85,0x38,0x00,0x01]
+! SPARC64: srax %g0, %g1, %g2                      ! encoding: [0x85,0x38,0x10,0x01]
+sran %g0, %g1, %g2
+! SPARC32: st %g0, [%o0+8]                         ! encoding: [0xc0,0x22,0x20,0x08]
+! SPARC64: stx %g0, [%o0+8]                        ! encoding: [0xc0,0x72,0x20,0x08]
+clrn [%o0 + 8]
+
+ba %ncc, .
+ta %ncc, 0x6d
+move %ncc, %g1, %g2
+fmovse %ncc, %f0, %f1
+fmovse %ncc, %f0, %f2
----------------
koachan wrote:

Marking as WIP because I'm kinda lost with how to implement `%ncc` handling.
I tried following the other conditional instructions parsing in SparcInstrAliases.td but seems like I can't get it to work.

https://github.com/llvm/llvm-project/pull/170794