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https://github.com/c64scene-ar/llvm-6502.git
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fea1dd0804
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79992 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1.1 KiB
LLVM
36 lines
1.1 KiB
LLVM
; RUN: llvm-as %s -o %t.bc
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; RUN: lli %t.bc > /dev/null
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; This testcase exposes a bug in the local register allocator where it runs out
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; of registers (due to too many overlapping live ranges), but then attempts to
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; use the ESP register (which is not allocatable) to hold a value.
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define i32 @main(i32 %A) {
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; ESP gets used again...
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%Ap2 = alloca i32, i32 %A ; <i32*> [#uses=11]
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; Produce lots of overlapping live ranges
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%B = add i32 %A, 1 ; <i32> [#uses=1]
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%C = add i32 %A, 2 ; <i32> [#uses=1]
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%D = add i32 %A, 3 ; <i32> [#uses=1]
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%E = add i32 %A, 4 ; <i32> [#uses=1]
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%F = add i32 %A, 5 ; <i32> [#uses=1]
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%G = add i32 %A, 6 ; <i32> [#uses=1]
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%H = add i32 %A, 7 ; <i32> [#uses=1]
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%I = add i32 %A, 8 ; <i32> [#uses=1]
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%J = add i32 %A, 9 ; <i32> [#uses=1]
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%K = add i32 %A, 10 ; <i32> [#uses=1]
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; Uses of all of the values
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store i32 %A, i32* %Ap2
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store i32 %B, i32* %Ap2
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store i32 %C, i32* %Ap2
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store i32 %D, i32* %Ap2
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store i32 %E, i32* %Ap2
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store i32 %F, i32* %Ap2
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store i32 %G, i32* %Ap2
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store i32 %H, i32* %Ap2
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store i32 %I, i32* %Ap2
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store i32 %J, i32* %Ap2
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store i32 %K, i32* %Ap2
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ret i32 0
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}
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