| ; RUN: opt < %s -basicaa -globals-aa -S -licm | FileCheck %s |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.10.0" |
| |
| @b = common global i32 0, align 4 |
| @c = internal global i32 0, align 4 |
| @d = common global i32 0, align 4 |
| @e = common global i32* null, align 4 |
| |
| define void @foo(i32* %P) noinline { |
| ; CHECK: define void @foo |
| %loadp = load i32, i32* %P, align 4 |
| store i32 %loadp, i32* @d, align 4 |
| ret void |
| } |
| |
| define void @bar() noinline { |
| ; CHECK: define void @bar |
| %loadp = load i32, i32* @d, align 4 |
| store i32 %loadp, i32* @c, align 4 |
| ret void |
| } |
| |
| define i32 @main() { |
| entry: |
| %retval = alloca i32, align 4 |
| %c = alloca [1 x i32], align 4 |
| store i32 0, i32* %retval, align 4 |
| call void @bar() |
| store i32 0, i32* @b, align 4 |
| br label %for.cond |
| ;; Check that @c is LICM'ed out. |
| ; CHECK: load i32, i32* @c |
| for.cond: ; preds = %for.inc, %entry |
| ; CHECK-LABEL: for.cond: |
| ; CHECK: load i32, i32* @b |
| %a1 = load i32, i32* @b, align 4 |
| %aa2 = load i32, i32* @c, align 4 |
| %add = add nsw i32 %a1, %aa2 |
| %p1 = load i32*, i32** @e, align 4 |
| call void @foo(i32* %p1) |
| %cmp = icmp slt i32 %add, 3 |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| %a2 = load i32, i32* @b, align 4 |
| %idxprom = sext i32 %a2 to i64 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body |
| %a3 = load i32, i32* @b, align 4 |
| %inc = add nsw i32 %a3, 1 |
| store i32 %inc, i32* @b, align 4 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| ret i32 0 |
| } |
| |
| ; Function Attrs: nounwind argmemonly |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) nounwind argmemonly |
| |
| ; Function Attrs: noreturn nounwind |
| declare void @abort() noreturn nounwind |
