1 ; RUN: llc -march=x86 %s -o -
2 ; RUN: llc -march=x86-64 %s -o -
6 ; Chain and flag folding issues.
7 define i32 @test1() nounwind ssp {
9 %tmp5.i = volatile load i32* undef ; <i32> [#uses=1]
10 %conv.i = zext i32 %tmp5.i to i64 ; <i64> [#uses=1]
11 %tmp12.i = volatile load i32* undef ; <i32> [#uses=1]
12 %conv13.i = zext i32 %tmp12.i to i64 ; <i64> [#uses=1]
13 %shl.i = shl i64 %conv13.i, 32 ; <i64> [#uses=1]
14 %or.i = or i64 %shl.i, %conv.i ; <i64> [#uses=1]
15 %add16.i = add i64 %or.i, 256 ; <i64> [#uses=1]
16 %shr.i = lshr i64 %add16.i, 8 ; <i64> [#uses=1]
17 %conv19.i = trunc i64 %shr.i to i32 ; <i32> [#uses=1]
18 volatile store i32 %conv19.i, i32* undef
23 define void @test2(i1 %x, i32 %y) nounwind {
24 %land.ext = zext i1 %x to i32 ; <i32> [#uses=1]
25 %and = and i32 %y, 1 ; <i32> [#uses=1]
26 %xor = xor i32 %and, %land.ext ; <i32> [#uses=1]
27 %cmp = icmp eq i32 %xor, 1 ; <i1> [#uses=1]
28 br i1 %cmp, label %if.end, label %if.then
30 if.then: ; preds = %land.end
33 if.end: ; preds = %land.end
38 %pair = type { i64, double }
40 define void @test3() {
41 dependentGraph243.exit:
42 %subject19 = load %pair* undef ; <%1> [#uses=1]
43 %0 = extractvalue %pair %subject19, 1 ; <double> [#uses=2]
44 %1 = select i1 undef, double %0, double undef ; <double> [#uses=1]
45 %2 = select i1 undef, double %1, double %0 ; <double> [#uses=1]
46 %3 = insertvalue %pair undef, double %2, 1 ; <%1> [#uses=1]
47 store %pair %3, %pair* undef
52 define i64 @test4(i8* %P) nounwind ssp {
54 %tmp1 = load i8* %P ; <i8> [#uses=3]
55 %tobool = icmp eq i8 %tmp1, 0 ; <i1> [#uses=1]
56 %tmp58 = sext i1 %tobool to i8 ; <i8> [#uses=1]
57 %mul.i = and i8 %tmp58, %tmp1 ; <i8> [#uses=1]
58 %conv6 = zext i8 %mul.i to i32 ; <i32> [#uses=1]
59 %cmp = icmp ne i8 %tmp1, 1 ; <i1> [#uses=1]
60 %conv11 = zext i1 %cmp to i32 ; <i32> [#uses=1]
61 %call12 = tail call i32 @safe(i32 %conv11) nounwind ; <i32> [#uses=1]
62 %and = and i32 %conv6, %call12 ; <i32> [#uses=1]
63 %tobool13 = icmp eq i32 %and, 0 ; <i1> [#uses=1]
64 br i1 %tobool13, label %if.else, label %return
66 if.else: ; preds = %entry
69 return: ; preds = %if.else, %entry
73 declare i32 @safe(i32)
76 define fastcc void @test5(i32 %FUNC) nounwind {
78 %0 = load i8* undef, align 1 ; <i8> [#uses=3]
79 %1 = sext i8 %0 to i32 ; <i32> [#uses=2]
80 %2 = zext i8 %0 to i32 ; <i32> [#uses=1]
81 %tmp1.i5037 = urem i32 %2, 10 ; <i32> [#uses=1]
82 %tmp.i5038 = icmp ugt i32 %tmp1.i5037, 15 ; <i1> [#uses=1]
83 %3 = zext i1 %tmp.i5038 to i8 ; <i8> [#uses=1]
84 %4 = icmp slt i8 %0, %3 ; <i1> [#uses=1]
85 %5 = add nsw i32 %1, 256 ; <i32> [#uses=1]
86 %storemerge.i.i57 = select i1 %4, i32 %5, i32 %1 ; <i32> [#uses=1]
87 %6 = shl i32 %storemerge.i.i57, 16 ; <i32> [#uses=1]
88 %7 = sdiv i32 %6, -256 ; <i32> [#uses=1]
89 %8 = trunc i32 %7 to i8 ; <i8> [#uses=1]
90 store i8 %8, i8* undef, align 1
95 ; Crash commoning identical asms.
97 define void @test6(i1 %C) nounwind optsize ssp {
99 br i1 %C, label %do.body55, label %do.body92
101 do.body55: ; preds = %if.else36
102 call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !0
105 do.body92: ; preds = %if.then66
106 call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !1
110 !0 = metadata !{i32 633550}
111 !1 = metadata !{i32 634261}
114 ; Crash during XOR optimization.
115 ; <rdar://problem/7869290>
117 define void @test7() nounwind ssp {
119 br i1 undef, label %bb14, label %bb67
122 %tmp0 = trunc i16 undef to i1
123 %tmp1 = load i8* undef, align 8
124 %tmp2 = shl i8 %tmp1, 4
125 %tmp3 = lshr i8 %tmp2, 7
126 %tmp4 = trunc i8 %tmp3 to i1
127 %tmp5 = icmp ne i1 %tmp0, %tmp4
128 br i1 %tmp5, label %bb14, label %bb67
134 ; Crash when trying to copy AH to AL.
136 define void @copy8bitregs() nounwind {
138 %div.i = sdiv i32 115200, 0
139 %shr8.i = lshr i32 %div.i, 8
140 %conv4.i = trunc i32 %shr8.i to i8
141 call void asm sideeffect "outb $0, ${1:w}", "{ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i8 %conv4.i, i32 1017) nounwind