Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/CodeGen/ARM/msr-it-block.ll

@@ -0,0 +1,55 @@
+; RUN: llc < %s -mtriple=thumbv6m-none-eabi | FileCheck %s --check-prefix=V6M --check-prefix=CHECK
+; RUN: llc < %s -mtriple=thumbv7m-none-eabi | FileCheck %s --check-prefix=V7M --check-prefix=CHECK
+; RUN: llc < %s -mtriple=thumbv7a-none-eabi | FileCheck %s --check-prefix=V7A --check-prefix=CHECK
+; RUN: llc < %s -mtriple=armv7a-none-eabi   | FileCheck %s --check-prefix=V7A --check-prefix=CHECK
+
+
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
+target triple = "armv7a-arm-none-eabi"
+
+define void @test_const(i32 %val) {
+; CHECK-LABEL: test_const:
+entry:
+  %cmp = icmp eq i32 %val, 0
+  br i1 %cmp, label %write_reg, label %exit
+
+write_reg:
+  tail call void @llvm.write_register.i32(metadata !0, i32 0)
+  tail call void @llvm.write_register.i32(metadata !0, i32 0)
+; V6M: msr     apsr, {{r[0-9]+}}
+; V6M: msr     apsr, {{r[0-9]+}}
+; V7M: msr     apsr_nzcvq, {{r[0-9]+}}
+; V7M: msr     apsr_nzcvq, {{r[0-9]+}}
+; V7A: msr     APSR_nzcvq, {{r[0-9]+}}
+; V7A: msr     APSR_nzcvq, {{r[0-9]+}}
+  br label %exit
+
+exit:
+  ret void
+}
+
+define void @test_var(i32 %val, i32 %apsr) {
+; CHECK-LABEL: test_var:
+entry:
+  %cmp = icmp eq i32 %val, 0
+  br i1 %cmp, label %write_reg, label %exit
+
+write_reg:
+  tail call void @llvm.write_register.i32(metadata !0, i32 %apsr)
+  tail call void @llvm.write_register.i32(metadata !0, i32 %apsr)
+; V6M: msr     apsr, {{r[0-9]+}}
+; V6M: msr     apsr, {{r[0-9]+}}
+; V7M: msr     apsr_nzcvq, {{r[0-9]+}}
+; V7M: msr     apsr_nzcvq, {{r[0-9]+}}
+; V7A: msr     APSR_nzcvq, {{r[0-9]+}}
+; V7A: msr     APSR_nzcvq, {{r[0-9]+}}
+  br label %exit
+
+exit:
+  ret void
+}
+
+
+declare void @llvm.write_register.i32(metadata, i32)
+
+!0 = !{!"apsr"}