73 lines
2.4 KiB
LLVM
73 lines
2.4 KiB
LLVM
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; RUN: opt -S -basic-aa -newgvn %s | FileCheck %s
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; CHECK: define i32 @main() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %tmp = load i32, i32* @d, align 4
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; CHECK-NEXT: %tmp1 = load i32, i32* @c, align 4
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; CHECK-NEXT: %tobool = icmp eq i32 %tmp1, -1
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; CHECK-NEXT: br i1 %tobool, label %if.end, label %if.then
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; CHECK: if.then:
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; CHECK-NEXT: br label %L
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; CHECK: L:
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; CHECK-NEXT: %e.0 = phi i32 [ 0, %if.then ], [ %e.1, %if.then4 ]
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; CHECK-NEXT: br label %if.end
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; CHECK: if.end:
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; CHECK-NEXT: %e.1 = phi i32 [ %e.0, %L ], [ %tmp, %entry ]
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; CHECK-NEXT: store i32 %e.1, i32* @a, align 4
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; CHECK-NEXT: %tmp2 = load i32, i32* @b, align 4
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; CHECK-NEXT: store i32 0, i32* @b, align 4
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; CHECK-NEXT: %sext = shl i32 %tmp2, 16
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; CHECK-NEXT: %conv1 = ashr exact i32 %sext, 16
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; CHECK-NEXT: %add = add nsw i32 %conv1, %tmp1
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; CHECK-NEXT: %add2 = add nsw i32 %add, %e.1
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; CHECK-NEXT: store i32 %add2, i32* @a, align 4
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; CHECK-NEXT: %tobool3 = icmp eq i32 %add2, 0
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; CHECK-NEXT: br i1 %tobool3, label %if.end5, label %if.then4
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; CHECK: if.then4:
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; CHECK-NEXT: br label %L
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; CHECK: if.end5:
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; CHECK-NEXT: ret i32 0
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; CHECK-NEXT: }
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@d = global i32 1, align 4
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@c = common global i32 0, align 4
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@a = common global i32 0, align 4
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@b = common global i32 0, align 4
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define i32 @main() {
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entry:
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%tmp = load i32, i32* @d, align 4
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%tmp1 = load i32, i32* @c, align 4
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%tobool = icmp eq i32 %tmp1, -1
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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br label %L
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L: ; preds = %if.then4, %if.then
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%e.0 = phi i32 [ 0, %if.then ], [ %e.1, %if.then4 ]
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br label %if.end
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if.end: ; preds = %L, %entry
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%e.1 = phi i32 [ %e.0, %L ], [ %tmp, %entry ]
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store i32 %e.1, i32* @a, align 4
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%tmp2 = load i32, i32* @b, align 4
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store i32 0, i32* @b, align 4
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%sext = shl i32 %tmp2, 16
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%conv1 = ashr exact i32 %sext, 16
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%tmp3 = load i32, i32* @c, align 4
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%add = add nsw i32 %conv1, %tmp3
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%tmp4 = load i32, i32* @a, align 4
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%and = and i32 %tmp4, %e.1
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%add2 = add nsw i32 %add, %and
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store i32 %add2, i32* @a, align 4
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%tobool3 = icmp eq i32 %add2, 0
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br i1 %tobool3, label %if.end5, label %if.then4
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if.then4: ; preds = %if.end
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br label %L
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if.end5: ; preds = %if.end
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ret i32 0
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}
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