| ; RUN: opt -scalar-evolution -loop-deletion -simplifycfg -analyze -enable-new-pm=0 < %s | FileCheck %s --check-prefix=CHECK-ANALYSIS-1 |
| ; RUN: opt "-passes=print<scalar-evolution>,loop(loop-deletion),simplifycfg" -disable-output < %s 2>&1 | FileCheck %s --check-prefix=CHECK-ANALYSIS-1 |
| ; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s --check-prefix=CHECK-ANALYSIS-2 |
| ; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s --check-prefix=CHECK-ANALYSIS-2 |
| |
| define i32 @pr34538() local_unnamed_addr #0 { |
| ; CHECK-ANALYSIS-1: Loop %do.body: backedge-taken count is 10000 |
| ; CHECK-ANALYSIS-1: Loop %do.body: max backedge-taken count is 10000 |
| ; CHECK-ANALYSIS-1: Loop %do.body: Predicated backedge-taken count is 10000 |
| entry: |
| br label %do.body |
| |
| do.body: ; preds = %do.body, %entry |
| %start.0 = phi i32 [ 0, %entry ], [ %inc.start.0, %do.body ] |
| %cmp = icmp slt i32 %start.0, 10000 |
| %inc = zext i1 %cmp to i32 |
| %inc.start.0 = add nsw i32 %start.0, %inc |
| br i1 %cmp, label %do.body, label %do.end |
| |
| do.end: ; preds = %do.body |
| ret i32 0 |
| } |
| |
| |
| define i32 @foo() { |
| entry: |
| br label %do.body |
| |
| do.body: ; preds = %do.body, %entry |
| %start.0 = phi i32 [ 0, %entry ], [ %inc.start.0, %do.body ] |
| %cmp = icmp slt i32 %start.0, 10000 |
| %select_ext = select i1 %cmp, i32 2 , i32 1 |
| %inc.start.0 = add nsw i32 %start.0, %select_ext |
| br i1 %cmp, label %do.body, label %do.end |
| |
| do.end: ; preds = %do.body |
| ret i32 0 |
| ; CHECK-ANALYSIS-2: Loop %do.body: backedge-taken count is 5000 |
| ; CHECK-ANALYSIS-2: Loop %do.body: max backedge-taken count is 5000 |
| ; CHECK-ANALYSIS-2: Loop %do.body: Predicated backedge-taken count is 5000 |
| } |
