| ; Test variable-sized allocas and addresses based on them in cases where |
| ; stack arguments are needed. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK1 |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK2 |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-A |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-B |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-C |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-D |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-FP |
| |
| declare i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 %f, i64 %g) |
| |
| ; Allocate %length bytes and take addresses based on the result. |
| ; There are two stack arguments, so an offset of 160 + 2 * 8 == 176 |
| ; is added to the copy of %r15. |
| define i64 @f1(i64 %length, i64 %index) { |
| ; The full allocation sequence is: |
| ; |
| ; la %r0, 7(%r2) 1 |
| ; nill %r0, 0xfff8 1 |
| ; lgr %r1, %r15 2 |
| ; sgr %r1, %r0 1 2 |
| ; lgr %r15, %r1 2 |
| ; |
| ; The third instruction does not depend on the first two, so check for |
| ; two fully-ordered sequences. |
| ; |
| ; FIXME: a better sequence would be: |
| ; |
| ; lgr %r1, %r15 |
| ; sgr %r1, %r2 |
| ; nill %r1, 0xfff8 |
| ; lgr %r15, %r1 |
| ; |
| ; CHECK1: f1: |
| ; CHECK1: la %r0, 7(%r2) |
| ; CHECK1: nill %r0, 65528 |
| ; CHECK1: sgr %r1, %r0 |
| ; CHECK1: lgr %r15, %r1 |
| ; |
| ; CHECK2: f1: |
| ; CHECK2: lgr %r1, %r15 |
| ; CHECK2: sgr %r1, %r0 |
| ; CHECK2: lgr %r15, %r1 |
| ; |
| ; CHECK-A: f1: |
| ; CHECK-A: lgr %r15, %r1 |
| ; CHECK-A: la %r2, 176(%r1) |
| ; |
| ; CHECK-B: f1: |
| ; CHECK-B: lgr %r15, %r1 |
| ; CHECK-B: la %r3, 177(%r1) |
| ; |
| ; CHECK-C: f1: |
| ; CHECK-C: lgr %r15, %r1 |
| ; CHECK-C: la %r4, 4095({{%r3,%r1|%r1,%r3}}) |
| ; |
| ; CHECK-D: f1: |
| ; CHECK-D: lgr %r15, %r1 |
| ; CHECK-D: lay %r5, 4096({{%r3,%r1|%r1,%r3}}) |
| ; |
| ; CHECK-E: f1: |
| ; CHECK-E: lgr %r15, %r1 |
| ; CHECK-E: lay %r6, 4271({{%r3,%r1|%r1,%r3}}) |
| ; |
| ; CHECK-FP: f1: |
| ; CHECK-FP: lgr %r11, %r15 |
| ; CHECK-FP: lmg %r6, %r15, 224(%r11) |
| %a = alloca i8, i64 %length |
| %b = getelementptr i8 *%a, i64 1 |
| %cindex = add i64 %index, 3919 |
| %c = getelementptr i8 *%a, i64 %cindex |
| %dindex = add i64 %index, 3920 |
| %d = getelementptr i8 *%a, i64 %dindex |
| %eindex = add i64 %index, 4095 |
| %e = getelementptr i8 *%a, i64 %eindex |
| %count = call i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 0, i64 0) |
| %res = add i64 %count, 1 |
| ret i64 %res |
| } |