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llvm-mirror/test/CodeGen/MBlaze/jumptable.ll

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; Ensure that jump tables can be handled by the mblaze backend. The
; jump table should be lowered to a "br" instruction using one of the
; available registers.
;
; RUN: llc < %s -march=mblaze | FileCheck %s
define i32 @jmptable(i32 %arg)
{
; CHECK: jmptable:
switch i32 %arg, label %DEFAULT [ i32 0, label %L0
i32 1, label %L1
i32 2, label %L2
i32 3, label %L3
i32 4, label %L4
i32 5, label %L5
i32 6, label %L6
i32 7, label %L7
i32 8, label %L8
i32 9, label %L9 ]
; CHECK: lw [[REG:r[0-9]*]]
; CHECK: brad [[REG]]
L0:
%var0 = add i32 %arg, 0
br label %DONE
L1:
%var1 = add i32 %arg, 1
br label %DONE
L2:
%var2 = add i32 %arg, 2
br label %DONE
L3:
%var3 = add i32 %arg, 3
br label %DONE
L4:
%var4 = add i32 %arg, 4
br label %DONE
L5:
%var5 = add i32 %arg, 5
br label %DONE
L6:
%var6 = add i32 %arg, 6
br label %DONE
L7:
%var7 = add i32 %arg, 7
br label %DONE
L8:
%var8 = add i32 %arg, 8
br label %DONE
L9:
%var9 = add i32 %arg, 9
br label %DONE
DEFAULT:
unreachable
DONE:
%rval = phi i32 [ %var0, %L0 ],
[ %var1, %L1 ],
[ %var2, %L2 ],
[ %var3, %L3 ],
[ %var4, %L4 ],
[ %var5, %L5 ],
[ %var6, %L6 ],
[ %var7, %L7 ],
[ %var8, %L8 ],
[ %var9, %L9 ]
ret i32 %rval
; CHECK: rtsd
}