llvm-for-llvmta/test/Analysis/ScalarEvolution/sext-zero.ll

41 lines
1.5 KiB
LLVM
Raw Permalink Normal View History

2022-04-25 10:02:23 +02:00
; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
; CHECK: %tmp9 = shl i64 %tmp8, 33
; CHECK-NEXT: --> {{.*}} Exits: (-8589934592 + (8589934592 * (zext i32 %arg2 to i64)))
; CHECK-NEXT: %tmp10 = ashr exact i64 %tmp9, 0
; CHECK-NEXT: --> {{.*}} Exits: (-8589934592 + (8589934592 * (zext i32 %arg2 to i64)))
define void @foo(i32* nocapture %arg, i32 %arg1, i32 %arg2) {
bb:
%tmp = icmp sgt i32 %arg2, 0
br i1 %tmp, label %bb3, label %bb6
bb3: ; preds = %bb
%tmp4 = zext i32 %arg2 to i64
br label %bb7
bb5: ; preds = %bb7
br label %bb6
bb6: ; preds = %bb5, %bb
ret void
bb7: ; preds = %bb7, %bb3
%tmp8 = phi i64 [ %tmp18, %bb7 ], [ 0, %bb3 ]
%tmp9 = shl i64 %tmp8, 33
%tmp10 = ashr exact i64 %tmp9, 0
%tmp11 = getelementptr inbounds i32, i32* %arg, i64 %tmp10
%tmp12 = load i32, i32* %tmp11, align 4
%tmp13 = sub nsw i32 %tmp12, %arg1
store i32 %tmp13, i32* %tmp11, align 4
%tmp14 = or i64 %tmp10, 1
%tmp15 = getelementptr inbounds i32, i32* %arg, i64 %tmp14
%tmp16 = load i32, i32* %tmp15, align 4
%tmp17 = mul nsw i32 %tmp16, %arg1
store i32 %tmp17, i32* %tmp15, align 4
%tmp18 = add nuw nsw i64 %tmp8, 1
%tmp19 = icmp eq i64 %tmp18, %tmp4
br i1 %tmp19, label %bb5, label %bb7
}