| ; Make sure a profile that is generated from a function without an exit node |
| ; does not cause an assertion. The profile consists of a non-zero count in a |
| ; basic block and 0 counts in all succcessor blocks. Expect a warning. |
| |
| ; RUN: llvm-profdata merge %S/Inputs/maxcountzero.proftext -o %t.profdata |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S 2>&1 | FileCheck %s |
| |
| define void @bar(i32 noundef %s) { |
| entry: |
| %cmp = icmp sgt i32 %s, 20 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: |
| call void @exit(i32 noundef 1) |
| unreachable |
| |
| if.end: |
| ret void |
| } |
| |
| declare void @exit(i32 noundef) |
| |
| define void @foo(i32 noundef %n) { |
| entry: |
| %sum = alloca i32, align 4 |
| store volatile i32 %n, ptr %sum, align 4 |
| %sum.0.sum.0. = load volatile i32, ptr %sum, align 4 |
| call void @bar(i32 noundef %sum.0.sum.0.) |
| %cmp = icmp slt i32 %n, 10 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: |
| %sum.0.sum.0.1 = load volatile i32, ptr %sum, align 4 |
| call void @bar(i32 noundef %sum.0.sum.0.1) |
| br label %if.end |
| |
| if.end: |
| br label %for.cond |
| |
| for.cond: |
| %sum.0.sum.0.2 = load volatile i32, ptr %sum, align 4 |
| call void @bar(i32 noundef %sum.0.sum.0.2) |
| br label %for.cond |
| } |
| |
| ; CHECK: warning:{{.*}}Profile in foo partially ignored |
| ; CHECK: define |
