source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/ScalarEvolution/2008-07-12-UnneededSelect1.ll @ 5027

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

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1; RUN: opt < %s -analyze -scalar-evolution 2>&1 | FileCheck %s
2; PR2261
3
4; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'foo'
5; CHECK-NOT: smax
6
7@lut = common global [256 x i8] zeroinitializer, align 32               ; <[256 x i8]*> [#uses=1]
8
9define void @foo(i32 %count, i32* %srcptr, i32* %dstptr) nounwind  {
10entry:
11        icmp sgt i32 %count, 0          ; <i1>:0 [#uses=1]
12        br i1 %0, label %bb.nph, label %return
13
14bb.nph:         ; preds = %entry
15        br label %bb
16
17bb:             ; preds = %bb1, %bb.nph
18        %j.01 = phi i32 [ %8, %bb1 ], [ 0, %bb.nph ]            ; <i32> [#uses=1]
19        load i32, i32* %srcptr, align 4         ; <i32>:1 [#uses=2]
20        and i32 %1, 255         ; <i32>:2 [#uses=1]
21        and i32 %1, -256                ; <i32>:3 [#uses=1]
22        getelementptr [256 x i8], [256 x i8]* @lut, i32 0, i32 %2               ; <i8*>:4 [#uses=1]
23        load i8, i8* %4, align 1                ; <i8>:5 [#uses=1]
24        zext i8 %5 to i32               ; <i32>:6 [#uses=1]
25        or i32 %6, %3           ; <i32>:7 [#uses=1]
26        store i32 %7, i32* %dstptr, align 4
27        add i32 %j.01, 1                ; <i32>:8 [#uses=2]
28        br label %bb1
29
30bb1:            ; preds = %bb
31        icmp slt i32 %8, %count         ; <i1>:9 [#uses=1]
32        br i1 %9, label %bb, label %bb1.return_crit_edge
33
34bb1.return_crit_edge:           ; preds = %bb1
35        br label %return
36
37return:         ; preds = %bb1.return_crit_edge, %entry
38        ret void
39}
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