[ARM] Make GlobalMerge merge extern globals by default

[oota-llvm.git] / test / CodeGen / ARM / global-merge-external.ll

diff --git a/test/CodeGen/ARM/global-merge-external.ll b/test/CodeGen/ARM/global-merge-external.ll
new file mode 100644 (file)
index 0000000..acc7789
--- /dev/null
+++ b/test/CodeGen/ARM/global-merge-external.ll
@@ -0,0 +1,48 @@
+; RUN: llc < %s -mtriple=arm-eabi  -arm-global-merge                                 | FileCheck %s --check-prefix=CHECK-MERGE
+; RUN: llc < %s -mtriple=arm-eabi  -arm-global-merge -global-merge-on-external=true  | FileCheck %s --check-prefix=CHECK-MERGE
+; RUN: llc < %s -mtriple=arm-eabi  -arm-global-merge -global-merge-on-external=false | FileCheck %s --check-prefix=CHECK-NO-MERGE
+; RUN: llc < %s -mtriple=arm-macho -arm-global-merge                                 | FileCheck %s --check-prefix=CHECK-NO-MERGE
+
+@x = global i32 0, align 4
+@y = global i32 0, align 4
+@z = global i32 0, align 4
+
+define void @f1(i32 %a1, i32 %a2) {
+;CHECK:          f1:
+;CHECK:          ldr {{r[0-9]+}}, [[LABEL1:\.LCPI[0-9]+_[0-9]]]
+;CHECK:          [[LABEL1]]:
+;CHECK-MERGE:    .long _MergedGlobals_x
+;CHECK-NO-MERGE: .long {{_?x}}
+  store i32 %a1, i32* @x, align 4
+  store i32 %a2, i32* @y, align 4
+  ret void
+}
+
+define void @g1(i32 %a1, i32 %a2) {
+;CHECK:          g1:
+;CHECK:          ldr {{r[0-9]+}}, [[LABEL2:\.LCPI[0-9]+_[0-9]]]
+;CHECK:          [[LABEL2]]:
+;CHECK-MERGE:    .long _MergedGlobals_x
+;CHECK-NO-MERGE: .long {{_?y}}
+  store i32 %a1, i32* @y, align 4
+  store i32 %a2, i32* @z, align 4
+  ret void
+}
+
+;CHECK-NO-MERGE-NOT: .globl _MergedGlobals_x
+
+;CHECK-MERGE:  .type   _MergedGlobals_x,%object
+;CHECK-MERGE:  .globl  _MergedGlobals_x
+;CHECK-MERGE:  .align  2
+;CHECK-MERGE: _MergedGlobals_x:
+;CHECK-MERGE:  .size   _MergedGlobals_x, 12
+
+;CHECK-MERGE:  .globl  x
+;CHECK-MERGE: x = _MergedGlobals_x
+;CHECK-MERGE: .size x, 4
+;CHECK-MERGE:  .globl  y
+;CHECK-MERGE: y = _MergedGlobals_x+4
+;CHECK-MERGE: .size y, 4
+;CHECK-MERGE:  .globl  z
+;CHECK-MERGE: z = _MergedGlobals_x+8
+;CHECK-MERGE: .size z, 4