1; Test integer negation. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5; Test i32->i32 negation. 6define i32 @f1(i32 %val) { 7; CHECK-LABEL: f1: 8; CHECK: lcr %r2, %r2 9; CHECK: br %r14 10 %neg = sub i32 0, %val 11 ret i32 %neg 12} 13 14; Test i32->i64 negation. 15define i64 @f2(i32 %val) { 16; CHECK-LABEL: f2: 17; CHECK: lcgfr %r2, %r2 18; CHECK: br %r14 19 %ext = sext i32 %val to i64 20 %neg = sub i64 0, %ext 21 ret i64 %neg 22} 23 24; Test i32->i64 negation that uses an "in-register" form of sign extension. 25define i64 @f3(i64 %val) { 26; CHECK-LABEL: f3: 27; CHECK: lcgfr %r2, %r2 28; CHECK: br %r14 29 %trunc = trunc i64 %val to i32 30 %ext = sext i32 %trunc to i64 31 %neg = sub i64 0, %ext 32 ret i64 %neg 33} 34 35; Test i64 negation. 36define i64 @f4(i64 %val) { 37; CHECK-LABEL: f4: 38; CHECK: lcgr %r2, %r2 39; CHECK: br %r14 40 %neg = sub i64 0, %val 41 ret i64 %neg 42} 43