forked from OSchip/llvm-project
80 lines
1.8 KiB
LLVM
80 lines
1.8 KiB
LLVM
; 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
|
|
}
|