1 files changed, 78 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/special-reg-acore.ll b/test/CodeGen/ARM/special-reg-acore.ll
new file mode 100644
index 000000000000..3d65ff44bfb0
--- /dev/null
+++ b/test/CodeGen/ARM/special-reg-acore.ll
@@ -0,0 +1,78 @@
+; RUN: llc < %s -mtriple=arm-none-eabi -mcpu=cortex-a8 2>&1 | FileCheck %s --check-prefix=ACORE
+; RUN: not llc < %s -mtriple=thumb-none-eabi -mcpu=cortex-m4 2>&1 | FileCheck %s --check-prefix=MCORE
+
+; MCORE: LLVM ERROR: Invalid register name "cpsr".
+
+define i32 @read_cpsr() nounwind {
+  ; ACORE-LABEL: read_cpsr:
+  ; ACORE: mrs r0, apsr
+  %reg = call i32 @llvm.read_register.i32(metadata !1)
+  ret i32 %reg
+}
+
+define i32 @read_aclass_registers() nounwind {
+entry:
+  ; ACORE-LABEL: read_aclass_registers:
+  ; ACORE: mrs r0, apsr
+  ; ACORE: mrs r1, spsr
+
+  %0 = call i32 @llvm.read_register.i32(metadata !0)
+  %1 = call i32 @llvm.read_register.i32(metadata !1)
+  %add1 = add i32 %1, %0
+  %2 = call i32 @llvm.read_register.i32(metadata !2)
+  %add2 = add i32 %add1, %2
+  ret i32 %add2
+}
+
+define void @write_aclass_registers(i32 %x) nounwind {
+entry:
+  ; ACORE-LABEL: write_aclass_registers:
+  ; ACORE:   msr APSR_nzcvq, r0
+  ; ACORE:   msr APSR_g, r0
+  ; ACORE:   msr APSR_nzcvqg, r0
+  ; ACORE:   msr CPSR_c, r0
+  ; ACORE:   msr CPSR_x, r0
+  ; ACORE:   msr APSR_g, r0
+  ; ACORE:   msr APSR_nzcvq, r0
+  ; ACORE:   msr CPSR_fsxc, r0
+  ; ACORE:   msr SPSR_c, r0
+  ; ACORE:   msr SPSR_x, r0
+  ; ACORE:   msr SPSR_s, r0
+  ; ACORE:   msr SPSR_f, r0
+  ; ACORE:   msr SPSR_fsxc, r0
+
+  call void @llvm.write_register.i32(metadata !3, i32 %x)
+  call void @llvm.write_register.i32(metadata !4, i32 %x)
+  call void @llvm.write_register.i32(metadata !5, i32 %x)
+  call void @llvm.write_register.i32(metadata !6, i32 %x)
+  call void @llvm.write_register.i32(metadata !7, i32 %x)
+  call void @llvm.write_register.i32(metadata !8, i32 %x)
+  call void @llvm.write_register.i32(metadata !9, i32 %x)
+  call void @llvm.write_register.i32(metadata !10, i32 %x)
+  call void @llvm.write_register.i32(metadata !11, i32 %x)
+  call void @llvm.write_register.i32(metadata !12, i32 %x)
+  call void @llvm.write_register.i32(metadata !13, i32 %x)
+  call void @llvm.write_register.i32(metadata !14, i32 %x)
+  call void @llvm.write_register.i32(metadata !15, i32 %x)
+  ret void
+}
+
+declare i32 @llvm.read_register.i32(metadata) nounwind
+declare void @llvm.write_register.i32(metadata, i32) nounwind
+
+!0 = !{!"apsr"}
+!1 = !{!"cpsr"}
+!2 = !{!"spsr"}
+!3 = !{!"apsr_nzcvq"}
+!4 = !{!"apsr_g"}
+!5 = !{!"apsr_nzcvqg"}
+!6 = !{!"cpsr_c"}
+!7 = !{!"cpsr_x"}
+!8 = !{!"cpsr_s"}
+!9 = !{!"cpsr_f"}
+!10 = !{!"cpsr_cxsf"}
+!11 = !{!"spsr_c"}
+!12 = !{!"spsr_x"}
+!13 = !{!"spsr_s"}
+!14 = !{!"spsr_f"}
+!15 = !{!"spsr_cxsf"}