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67 lines
2.4 KiB
LLVM
67 lines
2.4 KiB
LLVM
; RUN: llvm-as < %s | opt -reassociate -dce -gcse | llvm-dis | grep add | wc -l | grep 8
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; This test corresponds to GCC PR16157. Reassociate should arrange for 4 additions to be
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; left in each function.
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; We currently don't implement this. This would require looking globally to
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; find out which expressions are available, which we currently do not do.
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; XFAIL: *
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%a4 = external global int
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%a3 = external global int
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%a2 = external global int
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%a1 = external global int
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%a0 = external global int
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%b4 = external global int
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%b3 = external global int
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%b2 = external global int
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%b1 = external global int
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implementation ; Functions:
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void %test1() {
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%tmp.0 = load int* %a4 ; <int> [#uses=1]
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%tmp.1 = load int* %a3 ; <int> [#uses=2]
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%tmp.2 = add int %tmp.0, %tmp.1 ; <int> [#uses=1]
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%tmp.3 = load int* %a2 ; <int> [#uses=3]
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%tmp.4 = add int %tmp.2, %tmp.3 ; <int> [#uses=1]
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%tmp.5 = load int* %a1 ; <int> [#uses=4]
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%tmp.6 = add int %tmp.4, %tmp.5 ; <int> [#uses=1]
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%tmp.7 = load int* %a0 ; <int> [#uses=4]
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%tmp.8 = add int %tmp.6, %tmp.7 ; <int> [#uses=1]
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store int %tmp.8, int* %a4
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%tmp.11 = add int %tmp.1, %tmp.3 ; <int> [#uses=1]
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%tmp.13 = add int %tmp.11, %tmp.5 ; <int> [#uses=1]
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%tmp.15 = add int %tmp.13, %tmp.7 ; <int> [#uses=1]
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store int %tmp.15, int* %a3
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%tmp.18 = add int %tmp.3, %tmp.5 ; <int> [#uses=1]
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%tmp.20 = add int %tmp.18, %tmp.7 ; <int> [#uses=1]
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store int %tmp.20, int* %a2
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%tmp.23 = add int %tmp.5, %tmp.7 ; <int> [#uses=1]
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store int %tmp.23, int* %a1
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ret void
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}
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void %test2() {
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%tmp.0 = load int* %a4 ; <int> [#uses=1]
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%tmp.1 = load int* %a3 ; <int> [#uses=2]
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%tmp.2 = add int %tmp.0, %tmp.1 ; <int> [#uses=1]
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%tmp.3 = load int* %a2 ; <int> [#uses=3]
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%tmp.4 = add int %tmp.2, %tmp.3 ; <int> [#uses=1]
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%tmp.5 = load int* %a1 ; <int> [#uses=4]
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%tmp.6 = add int %tmp.4, %tmp.5 ; <int> [#uses=1]
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%tmp.7 = load int* %a0 ; <int> [#uses=4]
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%tmp.8 = add int %tmp.6, %tmp.7 ; <int> [#uses=1]
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store int %tmp.8, int* %b4
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%tmp.11 = add int %tmp.1, %tmp.3 ; <int> [#uses=1]
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%tmp.13 = add int %tmp.11, %tmp.5 ; <int> [#uses=1]
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%tmp.15 = add int %tmp.13, %tmp.7 ; <int> [#uses=1]
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store int %tmp.15, int* %b3
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%tmp.18 = add int %tmp.3, %tmp.5 ; <int> [#uses=1]
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%tmp.20 = add int %tmp.18, %tmp.7 ; <int> [#uses=1]
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store int %tmp.20, int* %b2
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%tmp.23 = add int %tmp.5, %tmp.7 ; <int> [#uses=1]
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store int %tmp.23, int* %b1
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ret void
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}
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