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comparison test/CodeGen/X86/isel-optnone.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children afa8332a0e37
comparison
equal deleted inserted replaced
-1:000000000000 0:95c75e76d11b
1 ; RUN: llc -O2 -march=x86 < %s | FileCheck %s
2
3 define i32* @fooOptnone(i32* %p, i32* %q, i32** %z) #0 {
4 entry:
5 %r = load i32* %p
6 %s = load i32* %q
7 %y = load i32** %z
8
9 %t0 = add i32 %r, %s
10 %t1 = add i32 %t0, 1
11 %t2 = getelementptr i32* %y, i32 1
12 %t3 = getelementptr i32* %t2, i32 %t1
13
14 ret i32* %t3
15
16 ; 'optnone' should use fast-isel which will not produce 'lea'.
17 ; CHECK-LABEL: fooOptnone:
18 ; CHECK-NOT: lea
19 ; CHECK: ret
20 }
21
22 define i32* @fooNormal(i32* %p, i32* %q, i32** %z) #1 {
23 entry:
24 %r = load i32* %p
25 %s = load i32* %q
26 %y = load i32** %z
27
28 %t0 = add i32 %r, %s
29 %t1 = add i32 %t0, 1
30 %t2 = getelementptr i32* %y, i32 1
31 %t3 = getelementptr i32* %t2, i32 %t1
32
33 ret i32* %t3
34
35 ; Normal ISel will produce 'lea'.
36 ; CHECK-LABEL: fooNormal:
37 ; CHECK: lea
38 ; CHECK: ret
39 }
40
41 attributes #0 = { nounwind optnone noinline }
42 attributes #1 = { nounwind }