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Diffstat (limited to 'test/CodeGen/AArch64/extern-weak.ll')
-rw-r--r-- | test/CodeGen/AArch64/extern-weak.ll | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/extern-weak.ll b/test/CodeGen/AArch64/extern-weak.ll new file mode 100644 index 0000000..3d3d867 --- /dev/null +++ b/test/CodeGen/AArch64/extern-weak.ll @@ -0,0 +1,35 @@ +; RUN: llc -mtriple=aarch64-none-linux-gnu -o - < %s | FileCheck %s + +declare extern_weak i32 @var() + +define i32()* @foo() { +; The usual ADRP/ADD pair can't be used for a weak reference because it must +; evaluate to 0 if the symbol is undefined. We use a litpool entry. + ret i32()* @var +; CHECK: .LCPI0_0: +; CHECK-NEXT: .xword var + +; CHECK: ldr x0, [{{x[0-9]+}}, #:lo12:.LCPI0_0] + +} + + +@arr_var = extern_weak global [10 x i32] + +define i32* @bar() { + %addr = getelementptr [10 x i32]* @arr_var, i32 0, i32 5 +; CHECK: .LCPI1_0: +; CHECK-NEXT: .xword arr_var + +; CHECK: ldr [[BASE:x[0-9]+]], [{{x[0-9]+}}, #:lo12:.LCPI1_0] +; CHECK: add x0, [[BASE]], #20 + ret i32* %addr +} + +@defined_weak_var = internal unnamed_addr global i32 0 + +define i32* @wibble() { + ret i32* @defined_weak_var +; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var +; CHECK: add x0, [[BASE]], #:lo12:defined_weak_var +}
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