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. 7 define 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. 17 define 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. 29 define 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. 40 define 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
