llvm-6502/test/Analysis/ScalarEvolution/sext-inreg.ll
Dan Gohman 3073329c53 Use WriteAsOperand instead of getName() to print loop header names,
so that unnamed blocks are handled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93059 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-09 18:17:45 +00:00

31 lines
1.2 KiB
LLVM

; RUN: opt < %s -analyze -scalar-evolution -disable-output > %t
; RUN: grep {sext i57 \{0,+,199\}<%bb> to i64} %t | count 1
; RUN: grep {sext i59 \{0,+,199\}<%bb> to i64} %t | count 1
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9.6"
define i64 @foo(i64* nocapture %x, i64 %n) nounwind {
entry:
%t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1]
br i1 %t0, label %bb, label %return
bb: ; preds = %bb, %entry
%i.01 = phi i64 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2]
%t1 = shl i64 %i.01, 7 ; <i32> [#uses=1]
%t2 = ashr i64 %t1, 7 ; <i32> [#uses=1]
%s1 = shl i64 %i.01, 5 ; <i32> [#uses=1]
%s2 = ashr i64 %s1, 5 ; <i32> [#uses=1]
%t3 = getelementptr i64* %x, i64 %i.01 ; <i64*> [#uses=1]
store i64 0, i64* %t3, align 1
%indvar.next = add i64 %i.01, 199 ; <i32> [#uses=2]
%exitcond = icmp eq i64 %indvar.next, %n ; <i1> [#uses=1]
br i1 %exitcond, label %return, label %bb
return: ; preds = %bb, %entry
%p = phi i64 [ 0, %entry ], [ %t2, %bb ]
%q = phi i64 [ 0, %entry ], [ %s2, %bb ]
%v = xor i64 %p, %q
ret i64 %v
}