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new testcase distilled from 176.gcc

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8094 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-08-23 23:38:59 +00:00
parent 7d6c24cdbf
commit ae1c1ffacd
1 changed files with 30 additions and 0 deletions
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30
test/ExecutionEngine/2003-08-23-RegisterAllocatePhysReg.ll Normal file
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; 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.
int %main(uint %A) {
%Ap2 = alloca uint, uint %A ; ESP gets used again...
%B = add uint %A, 1 ; Produce lots of overlapping live ranges
%C = add uint %A, 2
%D = add uint %A, 3
%E = add uint %A, 4
%F = add uint %A, 5
%G = add uint %A, 6
%H = add uint %A, 7
%I = add uint %A, 8
%J = add uint %A, 9
%K = add uint %A, 10
store uint %A, uint *%Ap2 ; Uses of all of the values
store uint %B, uint *%Ap2
store uint %C, uint *%Ap2
store uint %D, uint *%Ap2
store uint %E, uint *%Ap2
store uint %F, uint *%Ap2
store uint %G, uint *%Ap2
store uint %H, uint *%Ap2
store uint %I, uint *%Ap2
store uint %J, uint *%Ap2
store uint %K, uint *%Ap2
ret int 0
}