[clang] [llvm] [X86][AMX] Support AMX-TF32 (PR #115625)

[Phoebe Wang via cfe-commits]

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@@ -0,0 +1,47 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+amx-tile,+avx512f, \
+; RUN: -mattr=+amx-tf32,+amx-transpose -verify-machineinstrs | FileCheck %s
+
+define void @test_amx(i8* %pointer, i8* %base, i64 %stride) {
+; CHECK-LABEL: test_amx:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vxorps %xmm0, %xmm0, %xmm0
+; CHECK-NEXT:    vmovups %zmm0, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movb $1, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movb $8, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movw $8, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movb $8, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movw $8, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movb $8, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movw $8, -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    ldtilecfg -{{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movw $8, %ax
+; CHECK-NEXT:    tileloadd (%rsi,%rdx), %tmm0
+; CHECK-NEXT:    tilezero %tmm1
+; CHECK-NEXT:    tilezero %tmm2
+; CHECK-NEXT:    tmmultf32ps %tmm1, %tmm0, %tmm2
+; CHECK-NEXT:    ttmmultf32ps %tmm1, %tmm0, %tmm2
+; CHECK-NEXT:    tilestored %tmm2, (%rdi,%rdx)
+; CHECK-NEXT:    tilerelease
+; CHECK-NEXT:    vzeroupper
+; CHECK-NEXT:    retq
+
+  %a = call x86_amx @llvm.x86.tileloadd64.internal(i16 8, i16 8, i8* %base, i64 %stride)
+  %b = call x86_amx @llvm.x86.tilezero.internal(i16 8, i16 8)
+  %c = call x86_amx @llvm.x86.tilezero.internal(i16 8, i16 8)
+
+  %c1 = call x86_amx @llvm.x86.tmmultf32ps.internal(i16 8, i16 8, i16 8, x86_amx %c, x86_amx %a, x86_amx %b)
+  %c2 = call x86_amx @llvm.x86.ttmmultf32ps.internal(i16 8, i16 8, i16 8, x86_amx %c1, x86_amx %a, x86_amx %b)
+
+  call void @llvm.x86.tilestored64.internal(i16 8, i16 8, i8* %pointer, i64 %stride, x86_amx %c2)
+  ret void
+}
+
+declare x86_amx @llvm.x86.tilezero.internal(i16, i16)
+declare x86_amx @llvm.x86.tileloadd64.internal(i16, i16, i8*, i64)
+declare x86_amx @llvm.x86.tileloaddt164.internal(i16, i16, i8*, i64)
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phoebewang wrote:

Not used.

https://github.com/llvm/llvm-project/pull/115625