| ; RUN: opt < %s -passes=pgo-instr-gen -S | FileCheck %s |
| |
| ; Function Attrs: norecurse nounwind readnone uwtable |
| define i32 @bar(i32 %v) local_unnamed_addr #0 { |
| entry: |
| %mul = shl nsw i32 %v, 1 |
| ret i32 %mul |
| } |
| |
| ; Function Attrs: norecurse nounwind readonly uwtable |
| define i32 @foo(i8* nocapture readonly %p) #1 { |
| entry: |
| %targets = alloca [256 x i8*], align 16 |
| %arrayidx1 = getelementptr inbounds [256 x i8*], [256 x i8*]* %targets, i64 0, i64 93 |
| store i8* blockaddress(@foo, %if.end), i8** %arrayidx1, align 8 |
| br label %for.cond2 |
| |
| for.cond2: ; preds = %if.end, %for.cond2, %entry |
| ; CHECK: for.cond2: ; preds = %.split1 |
| %p.addr.0 = phi i8* [ %p, %entry ], [ %incdec.ptr5, %if.end ], [ %incdec.ptr, %for.cond2 ] |
| %incdec.ptr = getelementptr inbounds i8, i8* %p.addr.0, i64 1 |
| %0 = load i8, i8* %p.addr.0, align 1 |
| %cond = icmp eq i8 %0, 93 |
| br i1 %cond, label %if.end.preheader, label %for.cond2 |
| |
| if.end.preheader: ; preds = %for.cond2 |
| br label %if.end |
| |
| if.end: ; preds = %if.end.preheader, %if.end |
| ; CHECK: if.end: ; preds = %.split1 |
| %p.addr.1 = phi i8* [ %incdec.ptr5, %if.end ], [ %incdec.ptr, %if.end.preheader ] |
| %incdec.ptr5 = getelementptr inbounds i8, i8* %p.addr.1, i64 1 |
| %1 = load i8, i8* %p.addr.1, align 1 |
| %idxprom6 = zext i8 %1 to i64 |
| %arrayidx7 = getelementptr inbounds [256 x i8*], [256 x i8*]* %targets, i64 0, i64 %idxprom6 |
| %2 = load i8*, i8** %arrayidx7, align 8 |
| indirectbr i8* %2, [label %for.cond2, label %if.end] |
| ; CHECK: indirectbr i8* %2, [label %for.cond2, label %if.end] |
| } |
| |
| ;; If an indirectbr critical edge cannot be split, ignore it. |
| ;; The edge will not be profiled. |
| ; CHECK-LABEL: @cannot_split( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @llvm.instrprof.increment |
| ; CHECK-NOT: call void @llvm.instrprof.increment |
| define i32 @cannot_split(i8* nocapture readonly %p) { |
| entry: |
| %targets = alloca <2 x i8*>, align 16 |
| store <2 x i8*> <i8* blockaddress(@cannot_split, %indirect), i8* blockaddress(@cannot_split, %end)>, <2 x i8*>* %targets, align 16 |
| %arrayidx2 = getelementptr inbounds i8, i8* %p, i64 1 |
| %0 = load i8, i8* %arrayidx2 |
| %idxprom = sext i8 %0 to i64 |
| %arrayidx3 = getelementptr inbounds <2 x i8*>, <2 x i8*>* %targets, i64 0, i64 %idxprom |
| %1 = load i8*, i8** %arrayidx3, align 8 |
| br label %indirect |
| |
| indirect: ; preds = %entry, %indirect |
| indirectbr i8* %1, [label %indirect, label %end] |
| |
| end: ; preds = %indirect |
| ret i32 0 |
| } |
