xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/isel-optnone.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc -O2 -march=x86 < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdefine i32* @fooOptnone(i32* %p, i32* %q, i32** %z) #0 {
4*9880d681SAndroid Build Coastguard Workerentry:
5*9880d681SAndroid Build Coastguard Worker  %r = load i32, i32* %p
6*9880d681SAndroid Build Coastguard Worker  %s = load i32, i32* %q
7*9880d681SAndroid Build Coastguard Worker  %y = load i32*, i32** %z
8*9880d681SAndroid Build Coastguard Worker
9*9880d681SAndroid Build Coastguard Worker  %t0 = add i32 %r, %s
10*9880d681SAndroid Build Coastguard Worker  %t1 = add i32 %t0, 1
11*9880d681SAndroid Build Coastguard Worker  %t2 = getelementptr i32, i32* %y, i32 1
12*9880d681SAndroid Build Coastguard Worker  %t3 = getelementptr i32, i32* %t2, i32 %t1
13*9880d681SAndroid Build Coastguard Worker
14*9880d681SAndroid Build Coastguard Worker  ret i32* %t3
15*9880d681SAndroid Build Coastguard Worker
16*9880d681SAndroid Build Coastguard Worker; 'optnone' should use fast-isel which will not produce 'lea'.
17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: fooOptnone:
18*9880d681SAndroid Build Coastguard Worker; CHECK-NOT:   lea
19*9880d681SAndroid Build Coastguard Worker; CHECK:       ret
20*9880d681SAndroid Build Coastguard Worker}
21*9880d681SAndroid Build Coastguard Worker
22*9880d681SAndroid Build Coastguard Workerdefine i32* @fooNormal(i32* %p, i32* %q, i32** %z) #1 {
23*9880d681SAndroid Build Coastguard Workerentry:
24*9880d681SAndroid Build Coastguard Worker  %r = load i32, i32* %p
25*9880d681SAndroid Build Coastguard Worker  %s = load i32, i32* %q
26*9880d681SAndroid Build Coastguard Worker  %y = load i32*, i32** %z
27*9880d681SAndroid Build Coastguard Worker
28*9880d681SAndroid Build Coastguard Worker  %t0 = add i32 %r, %s
29*9880d681SAndroid Build Coastguard Worker  %t1 = add i32 %t0, 1
30*9880d681SAndroid Build Coastguard Worker  %t2 = getelementptr i32, i32* %y, i32 1
31*9880d681SAndroid Build Coastguard Worker  %t3 = getelementptr i32, i32* %t2, i32 %t1
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Worker  ret i32* %t3
34*9880d681SAndroid Build Coastguard Worker
35*9880d681SAndroid Build Coastguard Worker; Normal ISel will produce 'lea'.
36*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: fooNormal:
37*9880d681SAndroid Build Coastguard Worker; CHECK:       lea
38*9880d681SAndroid Build Coastguard Worker; CHECK:       ret
39*9880d681SAndroid Build Coastguard Worker}
40*9880d681SAndroid Build Coastguard Worker
41*9880d681SAndroid Build Coastguard Workerattributes #0 = { nounwind optnone noinline }
42*9880d681SAndroid Build Coastguard Workerattributes #1 = { nounwind }
43