| ; RUN: opt < %s -analyze -scalar-evolution 2>&1 | FileCheck %s |
| ; PR2261 |
| |
| ; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'foo' |
| ; CHECK-NOT: smax |
| |
| @lut = common global [256 x i8] zeroinitializer, align 32 ; <[256 x i8]*> [#uses=1] |
| |
| define void @foo(i32 %count, i32* %srcptr, i32* %dstptr) nounwind { |
| entry: |
| icmp sgt i32 %count, 0 ; <i1>:0 [#uses=1] |
| br i1 %0, label %bb.nph, label %return |
| |
| bb.nph: ; preds = %entry |
| br label %bb |
| |
| bb: ; preds = %bb1, %bb.nph |
| %j.01 = phi i32 [ %8, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=1] |
| load i32, i32* %srcptr, align 4 ; <i32>:1 [#uses=2] |
| and i32 %1, 255 ; <i32>:2 [#uses=1] |
| and i32 %1, -256 ; <i32>:3 [#uses=1] |
| getelementptr [256 x i8], [256 x i8]* @lut, i32 0, i32 %2 ; <i8*>:4 [#uses=1] |
| load i8, i8* %4, align 1 ; <i8>:5 [#uses=1] |
| zext i8 %5 to i32 ; <i32>:6 [#uses=1] |
| or i32 %6, %3 ; <i32>:7 [#uses=1] |
| store i32 %7, i32* %dstptr, align 4 |
| add i32 %j.01, 1 ; <i32>:8 [#uses=2] |
| br label %bb1 |
| |
| bb1: ; preds = %bb |
| icmp slt i32 %8, %count ; <i1>:9 [#uses=1] |
| br i1 %9, label %bb, label %bb1.return_crit_edge |
| |
| bb1.return_crit_edge: ; preds = %bb1 |
| br label %return |
| |
| return: ; preds = %bb1.return_crit_edge, %entry |
| ret void |
| } |
