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. 6 define void @f1(i32 zeroext %r2, i64 *%r3) { 7 ; CHECK-LABEL: f1: 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. 17 define void @f2(i32 signext %r2, i64 *%r3) { 18 ; CHECK-LABEL: f2: 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. 28 define void @f3(i32 zeroext %r2, i64 *%r3) { 29 ; CHECK-LABEL: f3: 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. 39 define void @f4(i32 signext %r2, i64 *%r3) { 40 ; CHECK-LABEL: f4: 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 } 48
