| ; RUN: opt -O3 -S < %s | FileCheck %s |
| ; XFAIL: * |
| |
| declare i32 @doo(...) |
| |
| ; PR6627 - This whole nasty sequence should be flattened down to a single |
| ; 32-bit comparison. |
| define void @test2(ptr %arrayidx) nounwind ssp { |
| entry: |
| %x1 = load i32, ptr %arrayidx, align 4 |
| %tmp = trunc i32 %x1 to i8 |
| %conv = zext i8 %tmp to i32 |
| %cmp = icmp eq i32 %conv, 127 |
| br i1 %cmp, label %land.lhs.true, label %if.end |
| |
| land.lhs.true: ; preds = %entry |
| %arrayidx4 = getelementptr inbounds i8, ptr %arrayidx, i64 1 |
| %tmp5 = load i8, ptr %arrayidx4, align 1 |
| %conv6 = zext i8 %tmp5 to i32 |
| %cmp7 = icmp eq i32 %conv6, 69 |
| br i1 %cmp7, label %land.lhs.true9, label %if.end |
| |
| land.lhs.true9: ; preds = %land.lhs.true |
| %arrayidx12 = getelementptr inbounds i8, ptr %arrayidx, i64 2 |
| %tmp13 = load i8, ptr %arrayidx12, align 1 |
| %conv14 = zext i8 %tmp13 to i32 |
| %cmp15 = icmp eq i32 %conv14, 76 |
| br i1 %cmp15, label %land.lhs.true17, label %if.end |
| |
| land.lhs.true17: ; preds = %land.lhs.true9 |
| %arrayidx20 = getelementptr inbounds i8, ptr %arrayidx, i64 3 |
| %tmp21 = load i8, ptr %arrayidx20, align 1 |
| %conv22 = zext i8 %tmp21 to i32 |
| %cmp23 = icmp eq i32 %conv22, 70 |
| br i1 %cmp23, label %if.then, label %if.end |
| |
| if.then: ; preds = %land.lhs.true17 |
| %call25 = call i32 (...) @doo() |
| br label %if.end |
| |
| if.end: |
| ret void |
| |
| ; CHECK-LABEL: @test2( |
| ; CHECK: %x1 = load i32, ptr %arrayidx, align 4 |
| ; CHECK-NEXT: icmp eq i32 %x1, 1179403647 |
| ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end |
| } |
| |
| ; PR6627 - This should all be flattened down to one compare. This is the same |
| ; as test2, except that the initial load is done as an i8 instead of i32, thus |
| ; requiring widening. |
| define void @test2a(ptr %arrayidx) nounwind ssp { |
| entry: |
| %x1 = load i8, ptr %arrayidx, align 4 |
| %conv = zext i8 %x1 to i32 |
| %cmp = icmp eq i32 %conv, 127 |
| br i1 %cmp, label %land.lhs.true, label %if.end |
| |
| land.lhs.true: ; preds = %entry |
| %arrayidx4 = getelementptr inbounds i8, ptr %arrayidx, i64 1 |
| %tmp5 = load i8, ptr %arrayidx4, align 1 |
| %conv6 = zext i8 %tmp5 to i32 |
| %cmp7 = icmp eq i32 %conv6, 69 |
| br i1 %cmp7, label %land.lhs.true9, label %if.end |
| |
| land.lhs.true9: ; preds = %land.lhs.true |
| %arrayidx12 = getelementptr inbounds i8, ptr %arrayidx, i64 2 |
| %tmp13 = load i8, ptr %arrayidx12, align 1 |
| %conv14 = zext i8 %tmp13 to i32 |
| %cmp15 = icmp eq i32 %conv14, 76 |
| br i1 %cmp15, label %land.lhs.true17, label %if.end |
| |
| land.lhs.true17: ; preds = %land.lhs.true9 |
| %arrayidx20 = getelementptr inbounds i8, ptr %arrayidx, i64 3 |
| %tmp21 = load i8, ptr %arrayidx20, align 1 |
| %conv22 = zext i8 %tmp21 to i32 |
| %cmp23 = icmp eq i32 %conv22, 70 |
| br i1 %cmp23, label %if.then, label %if.end |
| |
| if.then: ; preds = %land.lhs.true17 |
| %call25 = call i32 (...) @doo() |
| br label %if.end |
| |
| if.end: |
| ret void |
| |
| ; CHECK-LABEL: @test2a( |
| ; CHECK: %x1 = load i32, ptr {{.*}}, align 4 |
| ; CHECK-NEXT: icmp eq i32 %x1, 1179403647 |
| ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end |
| } |