diff options
Diffstat (limited to 'test/ExecutionEngine/MCJIT/2003-08-23-RegisterAllocatePhysReg.ll')
| -rw-r--r-- | test/ExecutionEngine/MCJIT/2003-08-23-RegisterAllocatePhysReg.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/ExecutionEngine/MCJIT/2003-08-23-RegisterAllocatePhysReg.ll b/test/ExecutionEngine/MCJIT/2003-08-23-RegisterAllocatePhysReg.ll new file mode 100644 index 0000000000..1959534b87 --- /dev/null +++ b/test/ExecutionEngine/MCJIT/2003-08-23-RegisterAllocatePhysReg.ll @@ -0,0 +1,34 @@ +; RUN: %lli -use-mcjit %s > /dev/null + +; This testcase exposes a bug in the local register allocator where it runs out +; of registers (due to too many overlapping live ranges), but then attempts to +; use the ESP register (which is not allocatable) to hold a value. + +define i32 @main(i32 %A) { + ; ESP gets used again... + %Ap2 = alloca i32, i32 %A ; <i32*> [#uses=11] + ; Produce lots of overlapping live ranges + %B = add i32 %A, 1 ; <i32> [#uses=1] + %C = add i32 %A, 2 ; <i32> [#uses=1] + %D = add i32 %A, 3 ; <i32> [#uses=1] + %E = add i32 %A, 4 ; <i32> [#uses=1] + %F = add i32 %A, 5 ; <i32> [#uses=1] + %G = add i32 %A, 6 ; <i32> [#uses=1] + %H = add i32 %A, 7 ; <i32> [#uses=1] + %I = add i32 %A, 8 ; <i32> [#uses=1] + %J = add i32 %A, 9 ; <i32> [#uses=1] + %K = add i32 %A, 10 ; <i32> [#uses=1] + ; Uses of all of the values + store i32 %A, i32* %Ap2 + store i32 %B, i32* %Ap2 + store i32 %C, i32* %Ap2 + store i32 %D, i32* %Ap2 + store i32 %E, i32* %Ap2 + store i32 %F, i32* %Ap2 + store i32 %G, i32* %Ap2 + store i32 %H, i32* %Ap2 + store i32 %I, i32* %Ap2 + store i32 %J, i32* %Ap2 + store i32 %K, i32* %Ap2 + ret i32 0 +} |