1 files changed, 45 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/PowerPC/elf-common.ll b/llvm/test/CodeGen/PowerPC/elf-common.ll
new file mode 100644
index 00000000000..cc73d9b58b5
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/elf-common.ll
@@ -0,0 +1,45 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 -O0 < %s \
+; RUN:    | FileCheck -check-prefix=NOOPT %s
+; RUN: llc -relocation-model=static -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
+; RUN:     -mcpu=pwr8 < %s | FileCheck -check-prefix=STATIC %s
+; RUN: llc -relocation-model=pic -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
+; RUN:     -mcpu=pwr8 < %s | FileCheck -check-prefix=PIC %s
+
+; Test correct code generation for static and pic for loading and storing a common symbol 
+
+@comm_glob = common global i32 0, align 4
+
+define signext i32 @test_comm() nounwind {
+; NOOPT-LABEL: test_comm:
+; NOOPT:       # %bb.0: # %entry
+; NOOPT-NEXT:    addis 3, 2, comm_glob@toc@ha
+; NOOPT-NEXT:    addi 3, 3, comm_glob@toc@l
+; NOOPT-NEXT:    lwz 4, 0(3)
+; NOOPT-NEXT:    addi 5, 4, 1
+; NOOPT-NEXT:    stw 5, 0(3)
+; NOOPT-NEXT:    extsw 3, 4
+; NOOPT-NEXT:    blr
+;
+; STATIC-LABEL: test_comm:
+; STATIC:       # %bb.0: # %entry
+; STATIC-NEXT:    addis 4, 2, comm_glob@toc@ha
+; STATIC-NEXT:    lwa 3, comm_glob@toc@l(4)
+; STATIC-NEXT:    addi 5, 3, 1
+; STATIC-NEXT:    stw 5, comm_glob@toc@l(4)
+; STATIC-NEXT:    blr
+;
+; PIC-LABEL: test_comm:
+; PIC:       # %bb.0: # %entry
+; PIC-NEXT:    addis 3, 2, .LC0@toc@ha
+; PIC-NEXT:    ld 4, .LC0@toc@l(3)
+; PIC-NEXT:    lwa 3, 0(4)
+; PIC-NEXT:    addi 5, 3, 1
+; PIC-NEXT:    stw 5, 0(4)
+; PIC-NEXT:    blr
+entry:
+  %0 = load i32, i32* @comm_glob, align 4
+  %inc = add nsw i32 %0, 1
+  store i32 %inc, i32* @comm_glob, align 4
+  ret i32 %0
+}