2013-05-06 18:17:29 +02:00
|
|
|
; Test that we take advantage of signext and zeroext annotations.
|
|
|
|
;
|
|
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
|
|
|
|
; Zero extension of something that is already zero-extended.
|
|
|
|
define void @f1(i32 zeroext %r2, i64 *%r3) {
|
2013-07-14 08:24:09 +02:00
|
|
|
; CHECK-LABEL: f1:
|
2013-05-06 18:17:29 +02:00
|
|
|
; CHECK-NOT: %r2
|
|
|
|
; CHECK: stg %r2, 0(%r3)
|
|
|
|
; CHECK: br %r14
|
|
|
|
%conv = zext i32 %r2 to i64
|
|
|
|
store i64 %conv, i64* %r3
|
|
|
|
ret void
|
|
|
|
}
|
|
|
|
|
|
|
|
; Sign extension of something that is already sign-extended.
|
|
|
|
define void @f2(i32 signext %r2, i64 *%r3) {
|
2013-07-14 08:24:09 +02:00
|
|
|
; CHECK-LABEL: f2:
|
2013-05-06 18:17:29 +02:00
|
|
|
; CHECK-NOT: %r2
|
|
|
|
; CHECK: stg %r2, 0(%r3)
|
|
|
|
; CHECK: br %r14
|
|
|
|
%conv = sext i32 %r2 to i64
|
|
|
|
store i64 %conv, i64* %r3
|
|
|
|
ret void
|
|
|
|
}
|
|
|
|
|
|
|
|
; Sign extension of something that is already zero-extended.
|
|
|
|
define void @f3(i32 zeroext %r2, i64 *%r3) {
|
2013-07-14 08:24:09 +02:00
|
|
|
; CHECK-LABEL: f3:
|
2013-05-06 18:17:29 +02:00
|
|
|
; CHECK: lgfr [[REGISTER:%r[0-5]+]], %r2
|
|
|
|
; CHECK: stg [[REGISTER]], 0(%r3)
|
|
|
|
; CHECK: br %r14
|
|
|
|
%conv = sext i32 %r2 to i64
|
|
|
|
store i64 %conv, i64* %r3
|
|
|
|
ret void
|
|
|
|
}
|
|
|
|
|
|
|
|
; Zero extension of something that is already sign-extended.
|
|
|
|
define void @f4(i32 signext %r2, i64 *%r3) {
|
2013-07-14 08:24:09 +02:00
|
|
|
; CHECK-LABEL: f4:
|
2013-05-06 18:17:29 +02:00
|
|
|
; CHECK: llgfr [[REGISTER:%r[0-5]+]], %r2
|
|
|
|
; CHECK: stg [[REGISTER]], 0(%r3)
|
|
|
|
; CHECK: br %r14
|
|
|
|
%conv = zext i32 %r2 to i64
|
|
|
|
store i64 %conv, i64* %r3
|
|
|
|
ret void
|
|
|
|
}
|