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llvm-mirror/test/Transforms/IndVarSimplify/pointer.ll
Dan Gohman 205b641954 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00

39 lines
1.1 KiB
LLVM

; RUN: opt < %s -indvars -S > %t
; RUN: grep {%exitcond = icmp eq i64 %indvar.next, %n} %t
; RUN: grep {getelementptr i8\\* %A, i64 %indvar} %t
; RUN: grep getelementptr %t | count 1
; RUN: grep add %t | count 1
; RUN: not grep scevgep %t
; RUN: not grep ptrtoint %t
; Indvars should be able to expand the pointer-arithmetic
; IV into an integer IV indexing into a simple getelementptr.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64"
define void @foo(i8* %A, i64 %n) nounwind {
entry:
%0 = icmp eq i64 %n, 0 ; <i1> [#uses=1]
br i1 %0, label %return, label %bb.nph
bb.nph: ; preds = %entry
%1 = getelementptr i8* %A, i64 %n ; <i8*> [#uses=1]
br label %bb
bb: ; preds = %bb1, %bb.nph
%q.01 = phi i8* [ %2, %bb1 ], [ %A, %bb.nph ] ; <i8*> [#uses=2]
store i8 0, i8* %q.01, align 1
%2 = getelementptr i8* %q.01, i64 1 ; <i8*> [#uses=2]
br label %bb1
bb1: ; preds = %bb
%3 = icmp eq i8* %1, %2 ; <i1> [#uses=1]
br i1 %3, label %bb1.return_crit_edge, label %bb
bb1.return_crit_edge: ; preds = %bb1
br label %return
return: ; preds = %bb1.return_crit_edge, %entry
ret void
}