source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/Generic/fwdtwice.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 989 bytes
Line 
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
15define i32 @SumArray(i32 %Num) {
16        %Num.upgrd.1 = alloca i32               ; <i32*> [#uses=2]
17        br label %Top
18
19Top:            ; preds = %Top, %0
20        store i32 %Num, i32* %Num.upgrd.1
21        %reg108 = load i32, 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
26bb6:            ; preds = %Top
27        ret i32 42
28}
29
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