[llvm] [AArch64] Add assembly/disaasembly of atomic ld/st (PR #112892)

[via llvm-commits]

================
@@ -0,0 +1,241 @@
+// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+lsfe 2>&1 < %s| FileCheck %s
+
+//------------------------------------------------------------------------------
+// ldfmin
+//------------------------------------------------------------------------------
+
+ldfminnm h0, s2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnm h0, s2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnm s0, d2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnm s0, d2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnm d0, h1, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnm d0, h1, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnm d0, d1, [w2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnm d0, d1, [w2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnm s0, s1, [x2, #4]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnm s0, s1, [x2, #4]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// -- ldfminnma
+
+ldfminnma h0, s2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnma h0, s2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnma s0, d2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnma s0, d2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnma d0, h1, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnma d0, h1, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnma d0, d1, [w2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnma d0, d1, [w2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnma s0, s1, [x2, #4]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnma s0, s1, [x2, #4]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// -- ldfminnmal
+
+ldfminnmal h0, s2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnmal h0, s2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnmal s0, d2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnmal s0, d2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnmal d0, h1, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnmal d0, h1, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnmal d0, d1, [w2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnmal d0, d1, [w2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnmal s0, s1, [x2, #4]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnmal s0, s1, [x2, #4]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+// -- ldfminnml
+
+ldfminnml h0, s2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnml h0, s2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnml s0, d2, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnml s0, d2, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnml d0, h1, [x2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnml d0, h1, [x2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnml d0, d1, [w2]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnml d0, d1, [w2]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+ldfminnml s0, s1, [x2, #4]
+// CHECK: [[@LINE-1]]:{{[0-9]+}}: error: invalid operand for instruction
+// CHECK-NEXT: ldfminnml s0, s1, [x2, #4]
+// CHECK-NOT: [[@LINE-1]]:{{[0-9]+}}:
+
+//------------------------------------------------------------------------------
+// ldbfminnm
----------------
SpencerAbson wrote:

nit: this comment should be capitalized.

https://github.com/llvm/llvm-project/pull/112892