forked from OSchip/llvm-project
37 lines
1001 B
LLVM
37 lines
1001 B
LLVM
; RUN: opt < %s -loop-extract -S | FileCheck %s
|
|
|
|
@label = common local_unnamed_addr global i8* null
|
|
|
|
; CHECK: define
|
|
; no outlined function
|
|
; CHECK-NOT: define
|
|
define i32 @sterix(i32 %n) {
|
|
entry:
|
|
%tobool = icmp ne i32 %n, 0
|
|
; this blockaddress references a basic block that goes in the extracted loop
|
|
%cond = select i1 %tobool, i8* blockaddress(@sterix, %for.cond), i8* blockaddress(@sterix, %exit)
|
|
store i8* %cond, i8** @label
|
|
%cmp5 = icmp sgt i32 %n, 0
|
|
br i1 %cmp5, label %for.body, label %exit
|
|
|
|
for.cond:
|
|
%mul = shl nsw i32 %s.06, 1
|
|
%exitcond = icmp eq i32 %inc, %n
|
|
br i1 %exitcond, label %exit.loopexit, label %for.body
|
|
|
|
for.body:
|
|
%i.07 = phi i32 [ %inc, %for.cond ], [ 0, %entry ]
|
|
%s.06 = phi i32 [ %mul, %for.cond ], [ 1, %entry ]
|
|
%inc = add nuw nsw i32 %i.07, 1
|
|
br label %for.cond
|
|
|
|
exit.loopexit:
|
|
%phitmp = icmp ne i32 %s.06, 2
|
|
%phitmp8 = zext i1 %phitmp to i32
|
|
br label %exit
|
|
|
|
exit:
|
|
%s.1 = phi i32 [ 1, %entry ], [ %phitmp8, %exit.loopexit ]
|
|
ret i32 %s.1
|
|
}
|