34 lines
954 B
LLVM
34 lines
954 B
LLVM
|
; RUN: opt -loop-reduce -verify < %s
|
||
|
|
|
||
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||
|
|
target triple = "x86_64--linux-gnu"
|
||
|
|
|
||
|
|
define void @unbounded() {
|
||
|
|
|
||
|
|
block_A:
|
||
|
|
%0 = sext i32 undef to i64
|
||
|
|
br i1 undef, label %block_F, label %block_G
|
||
|
|
|
||
|
|
block_C: ; preds = %block_F
|
||
|
|
br i1 undef, label %block_D, label %block_E
|
||
|
|
|
||
|
|
block_D: ; preds = %block_D, %block_C
|
||
|
|
br i1 undef, label %block_E, label %block_D
|
||
|
|
|
||
|
|
block_E: ; preds = %block_D, %block_C
|
||
|
|
%iv2 = phi i64 [ %4, %block_D ], [ %4, %block_C ]
|
||
|
|
%1 = add nsw i32 %iv1, 1
|
||
|
|
%2 = icmp eq i32 %1, undef
|
||
|
|
br i1 %2, label %block_G, label %block_F
|
||
|
|
|
||
|
|
block_F: ; preds = %block_E, %block_A
|
||
|
|
%iv3 = phi i64 [ %iv2, %block_E ], [ %0, %block_A ]
|
||
|
|
%iv1 = phi i32 [ %1, %block_E ], [ undef, %block_A ]
|
||
|
|
%3 = add nsw i64 %iv3, 2
|
||
|
|
%4 = add nsw i64 %iv3, 1
|
||
|
|
br label %block_C
|
||
|
|
|
||
|
|
block_G: ; preds = %block_E, %block_A
|
||
|
|
ret void
|
||
|
|
}
|