40 lines
1.2 KiB
LLVM
40 lines
1.2 KiB
LLVM
; 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
|
|
}
|