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llvm-6502/test/Transforms/Reassociate/looptest.ll
Dan Gohman f2f6ce65b7 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

51 lines
1.8 KiB
LLVM

; This testcase comes from this C fragment:
;
; void test(unsigned Num, int *Array) {
; unsigned i, j, k;
;
; for (i = 0; i != Num; ++i)
; for (j = 0; j != Num; ++j)
; for (k = 0; k != Num; ++k)
; printf("%d\n", i+k+j); /* Reassociate to (i+j)+k */
;}
;
; In this case, we want to reassociate the specified expr so that i+j can be
; hoisted out of the inner most loop.
;
; RUN: opt < %s -reassociate -S | grep 115 | not grep 117
; END.
@.LC0 = internal global [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1]
declare i32 @printf(i8*, ...)
define void @test(i32 %Num, i32* %Array) {
bb0:
%cond221 = icmp eq i32 0, %Num ; <i1> [#uses=3]
br i1 %cond221, label %bb7, label %bb2
bb2: ; preds = %bb6, %bb0
%reg115 = phi i32 [ %reg120, %bb6 ], [ 0, %bb0 ] ; <i32> [#uses=2]
br i1 %cond221, label %bb6, label %bb3
bb3: ; preds = %bb5, %bb2
%reg116 = phi i32 [ %reg119, %bb5 ], [ 0, %bb2 ] ; <i32> [#uses=2]
br i1 %cond221, label %bb5, label %bb4
bb4: ; preds = %bb4, %bb3
%reg117 = phi i32 [ %reg118, %bb4 ], [ 0, %bb3 ] ; <i32> [#uses=2]
%reg113 = add i32 %reg115, %reg117 ; <i32> [#uses=1]
%reg114 = add i32 %reg113, %reg116 ; <i32> [#uses=1]
%cast227 = getelementptr [4 x i8]* @.LC0, i64 0, i64 0 ; <i8*> [#uses=1]
call i32 (i8*, ...)* @printf( i8* %cast227, i32 %reg114 ) ; <i32>:0 [#uses=0]
%reg118 = add i32 %reg117, 1 ; <i32> [#uses=2]
%cond224 = icmp ne i32 %reg118, %Num ; <i1> [#uses=1]
br i1 %cond224, label %bb4, label %bb5
bb5: ; preds = %bb4, %bb3
%reg119 = add i32 %reg116, 1 ; <i32> [#uses=2]
%cond225 = icmp ne i32 %reg119, %Num ; <i1> [#uses=1]
br i1 %cond225, label %bb3, label %bb6
bb6: ; preds = %bb5, %bb2
%reg120 = add i32 %reg115, 1 ; <i32> [#uses=2]
%cond226 = icmp ne i32 %reg120, %Num ; <i1> [#uses=1]
br i1 %cond226, label %bb2, label %bb7
bb7: ; preds = %bb6, %bb0
ret void
}