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llvm-mirror/test/Transforms/LICM/2007-09-17-PromoteValue.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

62 lines
1.8 KiB
LLVM

; ModuleID = 'PR1657.bc'
; Do not promote getelementptr because it may exposes load from a null pointer
; and store from a null pointer which are covered by
; icmp eq %struct.decision* null, null condition.
; RUN: opt < %s -licm -S | not grep promoted
%struct.decision = type { i8, %struct.decision* }
define i32 @main() {
entry:
br label %blah.i
blah.i: ; preds = %cond_true.i, %entry
%tmp3.i = icmp eq %struct.decision* null, null ; <i1> [#uses=1]
br i1 %tmp3.i, label %clear_modes.exit, label %cond_true.i
cond_true.i: ; preds = %blah.i
%tmp1.i = getelementptr %struct.decision* null, i32 0, i32 0 ; <i8*> [#uses=1]
store i8 0, i8* %tmp1.i
br label %blah.i
clear_modes.exit: ; preds = %blah.i
call void @exit( i32 0 )
unreachable
}
define i32 @f(i8* %ptr) {
entry:
br label %loop.head
loop.head: ; preds = %cond.true, %entry
%x = phi i8* [ %ptr, %entry ], [ %ptr.i, %cond.true ] ; <i8*> [#uses=1]
%tmp3.i = icmp ne i8* %ptr, %x ; <i1> [#uses=1]
br i1 %tmp3.i, label %cond.true, label %exit
cond.true: ; preds = %loop.head
%ptr.i = getelementptr i8* %ptr, i32 0 ; <i8*> [#uses=2]
store i8 0, i8* %ptr.i
br label %loop.head
exit: ; preds = %loop.head
ret i32 0
}
define i32 @f2(i8* %p, i8* %q) {
entry:
br label %loop.head
loop.head: ; preds = %cond.true, %entry
%tmp3.i = icmp eq i8* null, %q ; <i1> [#uses=1]
br i1 %tmp3.i, label %exit, label %cond.true
cond.true: ; preds = %loop.head
%ptr.i = getelementptr i8* %p, i32 0 ; <i8*> [#uses=2]
store i8 0, i8* %ptr.i
br label %loop.head
exit: ; preds = %loop.head
ret i32 0
}
declare void @exit(i32)