| Vaivaswatha Nagaraj | 68befd7 | 2016-01-14 08:46:45 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -basicaa -globals-aa -S -enable-non-lto-gmr=true -licm | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| 4 | target triple = "x86_64-apple-macosx10.10.0" |
| 5 | |
| 6 | @b = common global i32 0, align 4 |
| 7 | @c = internal global i32 0, align 4 |
| 8 | @d = common global i32 0, align 4 |
| 9 | @e = common global i32* null, align 4 |
| 10 | |
| 11 | define void @foo(i32* %P) noinline { |
| 12 | ; CHECK: define void @foo |
| 13 | %loadp = load i32, i32* %P, align 4 |
| 14 | store i32 %loadp, i32* @d, align 4 |
| 15 | ret void |
| 16 | } |
| 17 | |
| 18 | define void @bar() noinline { |
| 19 | ; CHECK: define void @bar |
| 20 | %loadp = load i32, i32* @d, align 4 |
| 21 | store i32 %loadp, i32* @c, align 4 |
| 22 | ret void |
| 23 | } |
| 24 | |
| 25 | define i32 @main() { |
| 26 | entry: |
| 27 | %retval = alloca i32, align 4 |
| 28 | %c = alloca [1 x i32], align 4 |
| 29 | store i32 0, i32* %retval, align 4 |
| 30 | call void @bar() |
| 31 | store i32 0, i32* @b, align 4 |
| 32 | br label %for.cond |
| 33 | ;; Check that @c is LICM'ed out. |
| 34 | ; CHECK: load i32, i32* @c |
| 35 | for.cond: ; preds = %for.inc, %entry |
| 36 | ; CHECK-LABEL: for.cond: |
| 37 | ; CHECK: load i32, i32* @b |
| 38 | %a1 = load i32, i32* @b, align 4 |
| 39 | %aa2 = load i32, i32* @c, align 4 |
| 40 | %add = add nsw i32 %a1, %aa2 |
| 41 | %p1 = load i32*, i32** @e, align 4 |
| 42 | call void @foo(i32* %p1) |
| 43 | %cmp = icmp slt i32 %add, 3 |
| 44 | br i1 %cmp, label %for.body, label %for.end |
| 45 | |
| 46 | for.body: ; preds = %for.cond |
| 47 | %a2 = load i32, i32* @b, align 4 |
| 48 | %idxprom = sext i32 %a2 to i64 |
| 49 | br label %for.inc |
| 50 | |
| 51 | for.inc: ; preds = %for.body |
| 52 | %a3 = load i32, i32* @b, align 4 |
| 53 | %inc = add nsw i32 %a3, 1 |
| 54 | store i32 %inc, i32* @b, align 4 |
| 55 | br label %for.cond |
| 56 | |
| 57 | for.end: ; preds = %for.cond |
| 58 | ret i32 0 |
| 59 | } |
| 60 | |
| 61 | ; Function Attrs: nounwind argmemonly |
| 62 | declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind argmemonly |
| 63 | |
| 64 | ; Function Attrs: noreturn nounwind |
| 65 | declare void @abort() noreturn nounwind |