| ; RUN: llc -mtriple=i686-linux < %s | FileCheck %s | |
| define i32 @bar(i32 %count) { | |
| ; Test checks that basic block backedge2 is not moved before header, | |
| ; because it can't reduce taken branches. | |
| ; Later backedge1 and backedge2 is rotated before loop header. | |
| ; CHECK-LABEL: bar | |
| ; CHECK: %.entry | |
| ; CHECK: %.header | |
| ; CHECK: %.backedge1 | |
| ; CHECK: %.backedge2 | |
| ; CHECK: %.exit | |
| .entry: | |
| %c = shl nsw i32 %count, 2 | |
| br label %.header | |
| .header: | |
| %val1 = call i32 @foo() | |
| %cond1 = icmp sgt i32 %val1, 1 | |
| br i1 %cond1, label %.exit, label %.backedge1 | |
| .backedge1: | |
| %val2 = call i32 @foo() | |
| %cond2 = icmp sgt i32 %val2, 1 | |
| br i1 %cond2, label %.header, label %.backedge2 | |
| .backedge2: | |
| %val3 = call i32 @foo() | |
| br label %.header | |
| .exit: | |
| ret i32 %c | |
| } | |
| declare i32 @foo() |