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-rw-r--r--llvm/test/CodeGen/ARM/jump-table-tbh.ll55
1 files changed, 55 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/jump-table-tbh.ll b/llvm/test/CodeGen/ARM/jump-table-tbh.ll
new file mode 100644
index 00000000000..0a38e3b97a8
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/jump-table-tbh.ll
@@ -0,0 +1,55 @@
+; RUN: llc -mtriple=thumbv7m-linux-gnu -o - %s | FileCheck %s --check-prefix=T2
+; RUN: llc -mtriple=thumbv6m-linux-gnu -o - %s | FileCheck %s --check-prefix=T1
+
+declare void @foo(double)
+declare i32 @llvm.arm.space(i32, i32)
+
+define i32 @test_tbh(i1 %tst, i32 %sw, i32 %l) {
+ br label %complex
+
+; T2-LABEL: test_tbh:
+; T2: [[ANCHOR:.LCPI[0-9_]+]]:
+; T2: tbh [pc, r{{[0-9]+}}, lsl #1]
+; T2-NEXT: @ BB#1
+; T2-NEXT: LJTI
+; T2-NEXT: .short (.LBB0_[[x:[0-9]+]]-([[ANCHOR]]+4))/2
+; T2-NEXT: .short (.LBB0_{{[0-9]+}}-([[ANCHOR]]+4))/2
+; T2-NEXT: .short (.LBB0_{{[0-9]+}}-([[ANCHOR]]+4))/2
+; T2-NEXT: .short (.LBB0_[[x]]-([[ANCHOR]]+4))/2
+
+; T1-LABEL: test_tbh:
+; T1: lsls [[x:r[0-9]+]], r4, #1
+; T1: add [[x]], pc
+; T1: ldrh [[x]], {{\[}}[[x]], #4]
+; T1: lsls [[x]], [[x]], #1
+; T1: [[ANCHOR:.LCPI[0-9_]+]]:
+; T1: add pc, [[x]]
+; T1-NEXT: @ BB#2
+; T1-NEXT: LJTI
+; T1-NEXT: .short (.LBB0_[[x:[0-9]+]]-([[ANCHOR]]+4))/2
+; T1-NEXT: .short (.LBB0_{{[0-9]+}}-([[ANCHOR]]+4))/2
+; T1-NEXT: .short (.LBB0_{{[0-9]+}}-([[ANCHOR]]+4))/2
+; T1-NEXT: .short (.LBB0_[[x]]-([[ANCHOR]]+4))/2
+
+complex:
+ call void @foo(double 12345.0)
+ switch i32 %sw, label %second [ i32 0, label %other
+ i32 1, label %third
+ i32 2, label %end
+ i32 3, label %other ]
+
+second:
+ ret i32 43
+third:
+ call i32 @llvm.arm.space(i32 970, i32 undef)
+ ret i32 0
+
+other:
+ call void @bar()
+ unreachable
+
+end:
+ ret i32 42
+}
+
+declare void @bar()
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