1; Test the "R" asm constraint, which accepts addresses that have a base, 2; an index and a 12-bit displacement. 3; 4; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 5 6; Check the lowest range. 7define void @f1(i64 %base) { 8; CHECK-LABEL: f1: 9; CHECK: blah 0(%r2) 10; CHECK: br %r14 11 %addr = inttoptr i64 %base to i64 * 12 call void asm "blah $0", "=*R" (i64 *%addr) 13 ret void 14} 15 16; Check the next lowest byte. 17define void @f2(i64 %base) { 18; CHECK-LABEL: f2: 19; CHECK: aghi %r2, -1 20; CHECK: blah 0(%r2) 21; CHECK: br %r14 22 %add = add i64 %base, -1 23 %addr = inttoptr i64 %add to i64 * 24 call void asm "blah $0", "=*R" (i64 *%addr) 25 ret void 26} 27 28; Check the highest range. 29define void @f3(i64 %base) { 30; CHECK-LABEL: f3: 31; CHECK: blah 4095(%r2) 32; CHECK: br %r14 33 %add = add i64 %base, 4095 34 %addr = inttoptr i64 %add to i64 * 35 call void asm "blah $0", "=*R" (i64 *%addr) 36 ret void 37} 38 39; Check the next highest byte. 40define void @f4(i64 %base) { 41; CHECK-LABEL: f4: 42; CHECK: aghi %r2, 4096 43; CHECK: blah 0(%r2) 44; CHECK: br %r14 45 %add = add i64 %base, 4096 46 %addr = inttoptr i64 %add to i64 * 47 call void asm "blah $0", "=*R" (i64 *%addr) 48 ret void 49} 50 51; FIXME: at the moment the precise constraint is not passed down to 52; target code, so we must conservatively treat "R" as "Q". 53