Mercurial > hg > CbC > CbC_llvm
comparison test/CodeGen/Generic/fwdtwice.ll @ 0:95c75e76d11b LLVM3.4
LLVM 3.4
| author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 12 Dec 2013 13:56:28 +0900 |
| parents | |
| children | afa8332a0e37 |
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| -1:000000000000 | 0:95c75e76d11b |
|---|---|
| 1 ; RUN: llc < %s | |
| 2 | |
| 3 ;; | |
| 4 ;; Test the sequence: | |
| 5 ;; cast -> setle 0, %cast -> br %cond | |
| 6 ;; This sequence should cause the cast value to be forwarded twice, | |
| 7 ;; i.e., cast is forwarded to the setle and the setle is forwarded | |
| 8 ;; to the branch. | |
| 9 ;; register argument of the "branch-on-register" instruction, i.e., | |
| 10 ;; | |
| 11 ;; This produces the bogus output instruction: | |
| 12 ;; brlez <NULL VALUE>, .L_SumArray_bb3. | |
| 13 ;; This came from %bb1 of sumarrray.ll generated from sumarray.c. | |
| 14 | |
| 15 define i32 @SumArray(i32 %Num) { | |
| 16 %Num.upgrd.1 = alloca i32 ; <i32*> [#uses=2] | |
| 17 br label %Top | |
| 18 | |
| 19 Top: ; preds = %Top, %0 | |
| 20 store i32 %Num, i32* %Num.upgrd.1 | |
| 21 %reg108 = load i32* %Num.upgrd.1 ; <i32> [#uses=1] | |
| 22 %cast1006 = bitcast i32 %reg108 to i32 ; <i32> [#uses=1] | |
| 23 %cond1001 = icmp ule i32 %cast1006, 0 ; <i1> [#uses=1] | |
| 24 br i1 %cond1001, label %bb6, label %Top | |
| 25 | |
| 26 bb6: ; preds = %Top | |
| 27 ret i32 42 | |
| 28 } | |
| 29 |