blob: 7a819422eab85b79a93992bc178d2171c00f7609 [file] [log] [blame]
Chris Lattner5f94af02010-01-05 04:55:35 +00001; RUN: opt -reassociate -disable-output %s
2
3
4; rdar://7507855
Chris Lattnerc2d1b692010-01-09 06:01:36 +00005define fastcc i32 @test1() nounwind {
Chris Lattner5f94af02010-01-05 04:55:35 +00006entry:
7 %cond = select i1 undef, i32 1, i32 -1 ; <i32> [#uses=2]
8 br label %for.cond
9
10for.cond: ; preds = %for.body, %entry
11 %sub889 = sub i32 undef, undef ; <i32> [#uses=1]
12 %sub891 = sub i32 %sub889, %cond ; <i32> [#uses=0]
13 %add896 = sub i32 0, %cond ; <i32> [#uses=0]
14 ret i32 undef
15}
Chris Lattnerc2d1b692010-01-09 06:01:36 +000016
17; PR5981
18define i32 @test2() nounwind ssp {
19entry:
20 %0 = load i32* undef, align 4
21 %1 = mul nsw i32 undef, %0
22 %2 = mul nsw i32 undef, %0
23 %3 = add nsw i32 undef, %1
24 %4 = add nsw i32 %3, %2
25 %5 = add nsw i32 %4, 4
Chris Lattner893075f2010-03-05 07:18:54 +000026 %6 = shl i32 %0, 3
Chris Lattnerc2d1b692010-01-09 06:01:36 +000027 %7 = add nsw i32 %5, %6
28 br label %bb4.i9
29
Chris Lattner893075f2010-03-05 07:18:54 +000030bb4.i9:
Chris Lattnerc2d1b692010-01-09 06:01:36 +000031 %8 = add nsw i32 undef, %1
32 ret i32 0
33}
Chris Lattner893075f2010-03-05 07:18:54 +000034
35
36define i32 @test3(i32 %Arg, i32 %x1, i32 %x2, i32 %x3) {
37 %A = mul i32 %x1, %Arg
38 %B = mul i32 %Arg, %x2 ;; Part of add operation being factored, also used by C
39 %C = mul i32 %x3, %B
40
41 %D = add i32 %A, %B
42 %E = add i32 %D, %C
43 ret i32 %E
44}
Dan Gohmanfa0e6fa2011-03-10 19:51:54 +000045
46
47; rdar://9096268
48define void @x66303361ae3f602889d1b7d0f86e5455(i8* %arg) nounwind {
49_:
50 br label %_33
51
52_33: ; preds = %_33, %_
53 %tmp348 = load i8* %arg, align 1
54 %tmp349 = lshr i8 %tmp348, 7
55 %tmp350 = or i8 %tmp349, 42
56 %tmp351 = add i8 %tmp350, -42
57 %tmp352 = zext i8 %tmp351 to i32
58 %tmp358 = add i32 %tmp352, -501049439
59 %tmp359 = mul i32 %tmp358, %tmp358
60 %tmp360 = mul i32 %tmp352, %tmp352
61 %tmp361 = sub i32 %tmp359, %tmp360
62 %tmp362 = mul i32 %tmp361, -920056735
63 %tmp363 = add i32 %tmp362, 501049439
64 %tmp364 = add i32 %tmp362, -2000262972
65 %tmp365 = sub i32 %tmp363, %tmp364
66 %tmp366 = sub i32 -501049439, %tmp362
67 %tmp367 = add i32 %tmp365, %tmp366
68 br label %_33
69}