| Dmitri Gribenko | b137c9e | 2012-12-30 01:28:40 +0000 | [diff] [blame] | 1 | ; RUN: opt -O3 -S < %s | FileCheck %s |
| Jakob Stoklund Olesen | 201ba5f | 2012-04-19 00:20:38 +0000 | [diff] [blame] | 2 | ; XFAIL: * |
| 3 | |
| 4 | declare i32 @doo(...) |
| 5 | |
| 6 | ; PR6627 - This whole nasty sequence should be flattened down to a single |
| 7 | ; 32-bit comparison. |
| 8 | define void @test2(i8* %arrayidx) nounwind ssp { |
| 9 | entry: |
| 10 | %xx = bitcast i8* %arrayidx to i32* |
| 11 | %x1 = load i32* %xx, align 4 |
| 12 | %tmp = trunc i32 %x1 to i8 |
| 13 | %conv = zext i8 %tmp to i32 |
| 14 | %cmp = icmp eq i32 %conv, 127 |
| 15 | br i1 %cmp, label %land.lhs.true, label %if.end |
| 16 | |
| 17 | land.lhs.true: ; preds = %entry |
| 18 | %arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1 |
| 19 | %tmp5 = load i8* %arrayidx4, align 1 |
| 20 | %conv6 = zext i8 %tmp5 to i32 |
| 21 | %cmp7 = icmp eq i32 %conv6, 69 |
| 22 | br i1 %cmp7, label %land.lhs.true9, label %if.end |
| 23 | |
| 24 | land.lhs.true9: ; preds = %land.lhs.true |
| 25 | %arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2 |
| 26 | %tmp13 = load i8* %arrayidx12, align 1 |
| 27 | %conv14 = zext i8 %tmp13 to i32 |
| 28 | %cmp15 = icmp eq i32 %conv14, 76 |
| 29 | br i1 %cmp15, label %land.lhs.true17, label %if.end |
| 30 | |
| 31 | land.lhs.true17: ; preds = %land.lhs.true9 |
| 32 | %arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3 |
| 33 | %tmp21 = load i8* %arrayidx20, align 1 |
| 34 | %conv22 = zext i8 %tmp21 to i32 |
| 35 | %cmp23 = icmp eq i32 %conv22, 70 |
| 36 | br i1 %cmp23, label %if.then, label %if.end |
| 37 | |
| 38 | if.then: ; preds = %land.lhs.true17 |
| 39 | %call25 = call i32 (...)* @doo() |
| 40 | br label %if.end |
| 41 | |
| 42 | if.end: |
| 43 | ret void |
| 44 | |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame^] | 45 | ; CHECK-LABEL: @test2( |
| Jakob Stoklund Olesen | 201ba5f | 2012-04-19 00:20:38 +0000 | [diff] [blame] | 46 | ; CHECK: %x1 = load i32* %xx, align 4 |
| 47 | ; CHECK-NEXT: icmp eq i32 %x1, 1179403647 |
| 48 | ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end |
| 49 | } |
| 50 | |
| 51 | ; PR6627 - This should all be flattened down to one compare. This is the same |
| 52 | ; as test2, except that the initial load is done as an i8 instead of i32, thus |
| 53 | ; requiring widening. |
| 54 | define void @test2a(i8* %arrayidx) nounwind ssp { |
| 55 | entry: |
| 56 | %x1 = load i8* %arrayidx, align 4 |
| 57 | %conv = zext i8 %x1 to i32 |
| 58 | %cmp = icmp eq i32 %conv, 127 |
| 59 | br i1 %cmp, label %land.lhs.true, label %if.end |
| 60 | |
| 61 | land.lhs.true: ; preds = %entry |
| 62 | %arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1 |
| 63 | %tmp5 = load i8* %arrayidx4, align 1 |
| 64 | %conv6 = zext i8 %tmp5 to i32 |
| 65 | %cmp7 = icmp eq i32 %conv6, 69 |
| 66 | br i1 %cmp7, label %land.lhs.true9, label %if.end |
| 67 | |
| 68 | land.lhs.true9: ; preds = %land.lhs.true |
| 69 | %arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2 |
| 70 | %tmp13 = load i8* %arrayidx12, align 1 |
| 71 | %conv14 = zext i8 %tmp13 to i32 |
| 72 | %cmp15 = icmp eq i32 %conv14, 76 |
| 73 | br i1 %cmp15, label %land.lhs.true17, label %if.end |
| 74 | |
| 75 | land.lhs.true17: ; preds = %land.lhs.true9 |
| 76 | %arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3 |
| 77 | %tmp21 = load i8* %arrayidx20, align 1 |
| 78 | %conv22 = zext i8 %tmp21 to i32 |
| 79 | %cmp23 = icmp eq i32 %conv22, 70 |
| 80 | br i1 %cmp23, label %if.then, label %if.end |
| 81 | |
| 82 | if.then: ; preds = %land.lhs.true17 |
| 83 | %call25 = call i32 (...)* @doo() |
| 84 | br label %if.end |
| 85 | |
| 86 | if.end: |
| 87 | ret void |
| 88 | |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame^] | 89 | ; CHECK-LABEL: @test2a( |
| Jakob Stoklund Olesen | 201ba5f | 2012-04-19 00:20:38 +0000 | [diff] [blame] | 90 | ; CHECK: %x1 = load i32* {{.*}}, align 4 |
| 91 | ; CHECK-NEXT: icmp eq i32 %x1, 1179403647 |
| 92 | ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end |
| 93 | } |