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gerrit-public.fairphone.software / toolchain / llvm-project / f07833057c012ca19d173f1e4990d8fa3ccda6cb / . / llvm / test / CodeGen / SystemZ / args-05.ll
blob: 8a6ef4c54ffef628d2a8315d3ee72d2f940cb7f0 [file] [log] [blame]
Ulrich Weigand9e3577f2013-05-06 16:17:29 +0000[diff] [blame]1; Test that we take advantage of signext and zeroext annotations.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5; Zero extension of something that is already zero-extended.
6define void @f1(i32 zeroext %r2, i64 *%r3) {
Stephen Lind24ab202013-07-14 06:24:09 +0000[diff] [blame]7; CHECK-LABEL: f1:
Ulrich Weigand9e3577f2013-05-06 16:17:29 +0000[diff] [blame]8; CHECK-NOT: %r2
9; CHECK: stg %r2, 0(%r3)
10; CHECK: br %r14
11 %conv = zext i32 %r2 to i64
12 store i64 %conv, i64* %r3
13 ret void
14}
15
16; Sign extension of something that is already sign-extended.
17define void @f2(i32 signext %r2, i64 *%r3) {
Stephen Lind24ab202013-07-14 06:24:09 +0000[diff] [blame]18; CHECK-LABEL: f2:
Ulrich Weigand9e3577f2013-05-06 16:17:29 +0000[diff] [blame]19; CHECK-NOT: %r2
20; CHECK: stg %r2, 0(%r3)
21; CHECK: br %r14
22 %conv = sext i32 %r2 to i64
23 store i64 %conv, i64* %r3
24 ret void
25}
26
27; Sign extension of something that is already zero-extended.
28define void @f3(i32 zeroext %r2, i64 *%r3) {
Stephen Lind24ab202013-07-14 06:24:09 +0000[diff] [blame]29; CHECK-LABEL: f3:
Ulrich Weigand9e3577f2013-05-06 16:17:29 +0000[diff] [blame]30; CHECK: lgfr [[REGISTER:%r[0-5]+]], %r2
31; CHECK: stg [[REGISTER]], 0(%r3)
32; CHECK: br %r14
33 %conv = sext i32 %r2 to i64
34 store i64 %conv, i64* %r3
35 ret void
36}
37
38; Zero extension of something that is already sign-extended.
39define void @f4(i32 signext %r2, i64 *%r3) {
Stephen Lind24ab202013-07-14 06:24:09 +0000[diff] [blame]40; CHECK-LABEL: f4:
Ulrich Weigand9e3577f2013-05-06 16:17:29 +0000[diff] [blame]41; CHECK: llgfr [[REGISTER:%r[0-5]+]], %r2
42; CHECK: stg [[REGISTER]], 0(%r3)
43; CHECK: br %r14
44 %conv = zext i32 %r2 to i64
45 store i64 %conv, i64* %r3
46 ret void
47}