| ; Test the "S" asm constraint, which accepts addresses that have a base |
| ; and a 20-bit displacement. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -no-integrated-as | FileCheck %s |
| |
| ; Check the lowest range. |
| define void @f1(i64 %base) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: blah -524288(%r2) |
| ; CHECK: br %r14 |
| %add = add i64 %base, -524288 |
| %addr = inttoptr i64 %add to i64 * |
| call void asm "blah $0", "=*S" (i64 *%addr) |
| ret void |
| } |
| |
| ; Check the next lowest byte. |
| define void @f2(i64 %base) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: agfi %r2, -524289 |
| ; CHECK: blah 0(%r2) |
| ; CHECK: br %r14 |
| %add = add i64 %base, -524289 |
| %addr = inttoptr i64 %add to i64 * |
| call void asm "blah $0", "=*S" (i64 *%addr) |
| ret void |
| } |
| |
| ; Check the highest range. |
| define void @f3(i64 %base) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: blah 524287(%r2) |
| ; CHECK: br %r14 |
| %add = add i64 %base, 524287 |
| %addr = inttoptr i64 %add to i64 * |
| call void asm "blah $0", "=*S" (i64 *%addr) |
| ret void |
| } |
| |
| ; Check the next highest byte. |
| define void @f4(i64 %base) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: agfi %r2, 524288 |
| ; CHECK: blah 0(%r2) |
| ; CHECK: br %r14 |
| %add = add i64 %base, 524288 |
| %addr = inttoptr i64 %add to i64 * |
| call void asm "blah $0", "=*S" (i64 *%addr) |
| ret void |
| } |