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 -no-integrated-as | 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 ; Check that indices are allowed 52 define void @f5(i64 %base, i64 %index) { 53 ; CHECK-LABEL: f5: 54 ; CHECK: blah 0(%r3,%r2) 55 ; CHECK: br %r14 56 %add = add i64 %base, %index 57 %addr = inttoptr i64 %add to i64 * 58 call void asm "blah $0", "=*R" (i64 *%addr) 59 ret void 60 } 61 62 ; Check that indices and displacements are allowed simultaneously 63 define void @f6(i64 %base, i64 %index) { 64 ; CHECK-LABEL: f6: 65 ; CHECK: blah 4095(%r3,%r2) 66 ; CHECK: br %r14 67 %add = add i64 %base, 4095 68 %addi = add i64 %add, %index 69 %addr = inttoptr i64 %addi to i64 * 70 call void asm "blah $0", "=*R" (i64 *%addr) 71 ret void 72 } 73 74 ; Check that LAY is used if there is an index but the displacement is too large 75 define void @f7(i64 %base, i64 %index) { 76 ; CHECK-LABEL: f7: 77 ; CHECK: lay %r0, 4096(%r3,%r2) 78 ; CHECK: blah 0(%r0) 79 ; CHECK: br %r14 80 %add = add i64 %base, 4096 81 %addi = add i64 %add, %index 82 %addr = inttoptr i64 %addi to i64 * 83 call void asm "blah $0", "=*R" (i64 *%addr) 84 ret void 85 } 86
