[arm-fast-isel] Add support for ARM PIC.

llvm-svn: 162823

1 files changed, 43 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/fast-isel-pic.ll b/llvm/test/CodeGen/ARM/fast-isel-pic.ll
new file mode 100644
index 00000000000..392a845d2cc
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/fast-isel-pic.ll
@@ -0,0 +1,43 @@
+; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=pic -mtriple=thumbv7-apple-ios | FileCheck %s --check-prefix=THUMB
+; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=pic -mtriple=arm-apple-ios | FileCheck %s --check-prefix=ARM
+; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=pic -mtriple=armv7-apple-ios | FileCheck %s --check-prefix=ARMv7
+
+@g = global i32 0, align 4
+
+define i32 @LoadGV() {
+entry:
+; THUMB: LoadGV
+; THUMB: movw [[reg0:r[0-9]+]],
+; THUMB: movt [[reg0]],
+; THUMB: add  [[reg0]], pc
+; ARM: LoadGV
+; ARM: ldr [[reg1:r[0-9]+]],
+; ARM: add [[reg1]], pc, [[reg1]]
+; ARMv7: LoadGV
+; ARMv7: movw [[reg2:r[0-9]+]],
+; ARMv7: movt [[reg2]],
+; ARMv7: add  [[reg2]], pc, [[reg2]]
+  %tmp = load i32* @g
+  ret i32 %tmp
+}
+
+@i = external global i32
+
+define i32 @LoadIndirectSymbol() {
+entry:
+; THUMB: LoadIndirectSymbol
+; THUMB: movw r[[reg3:[0-9]+]],
+; THUMB: movt r[[reg3]],
+; THUMB: add  r[[reg3]], pc
+; THUMB: ldr  r[[reg3]], [r[[reg3]]]
+; ARM: LoadIndirectSymbol
+; ARM: ldr [[reg4:r[0-9]+]],
+; ARM: ldr [[reg4]], [pc, [[reg4]]]
+; ARMv7: LoadIndirectSymbol
+; ARMv7: movw r[[reg5:[0-9]+]],
+; ARMv7: movt r[[reg5]],
+; ARMv7: add  r[[reg5]], pc, r[[reg5]]
+; ARMv7: ldr  r[[reg5]], [r[[reg5]]]
+  %tmp = load i32* @i
+  ret i32 %tmp
+}