mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-28 19:31:58 +00:00
199da600f3
This patch add code to remove unreachable blocks from function as they may cause jump threading to stuck in infinite loop. Differential Revision: http://reviews.llvm.org/D3991 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211103 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
482 B
LLVM
23 lines
482 B
LLVM
; RUN: opt -S -jump-threading < %s | FileCheck %s
|
|
|
|
; CHECK-LABEL: @f(
|
|
; CHECK-LABEL: entry
|
|
; CHECK: ret void
|
|
; CHECK-NOT: for.cond1
|
|
; CHECK-NOT: for.body
|
|
|
|
define void @f() {
|
|
entry:
|
|
ret void
|
|
|
|
for.cond1:
|
|
%i.025 = phi i32 [ %inc, %for.body ], [ %inc, %for.body ], [ 1, %for.cond1 ]
|
|
%cmp = icmp slt i32 %i.025, 2
|
|
br i1 %cmp, label %for.body, label %for.cond1
|
|
|
|
for.body:
|
|
%inc = add nsw i32 %i.025, 0
|
|
%a = icmp ugt i32 %inc, 2
|
|
br i1 %a, label %for.cond1, label %for.cond1
|
|
}
|