1 ; Test variable-sized allocas and addresses based on them in cases where 2 ; stack arguments are needed. 3 ; 4 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 5 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-A 6 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-B 7 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-C 8 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-D 9 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-FP 10 11 declare i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 %f, i64 %g) 12 13 ; Allocate %length bytes and take addresses based on the result. 14 ; There are two stack arguments, so an offset of 160 + 2 * 8 == 176 15 ; is added to the copy of %r15. 16 ; 17 ; NOTE: 'la %r0, 177(%r1)' is actually an expected fail as it would 18 ; be better (and possible) to load into %r3 directly. 19 ; 20 define i64 @f1(i64 %length, i64 %index) { 21 ; FIXME: a better sequence would be: 22 ; 23 ; lgr %r1, %r15 24 ; sgr %r1, %r2 25 ; nill %r1, 0xfff8 26 ; lgr %r15, %r1 27 ; 28 ; CHECK-LABEL: f1: 29 ; CHECK-DAG: la [[REG1:%r[0-5]]], 7(%r2) 30 ; CHECK-DAG: nill [[REG1]], 65528 31 ; CHECK-DAG: lgr [[REG2:%r[0-5]]], %r15 32 ; CHECK: sgr [[REG2]], [[REG1]] 33 ; CHECK: lgr %r15, [[REG2]] 34 ; 35 ; CHECK-A-LABEL: f1: 36 ; CHECK-A-DAG: lgr %r15, %r1 37 ; CHECK-A-DAG: la %r2, 176(%r1) 38 ; 39 ; CHECK-B-LABEL: f1: 40 ; CHECK-B: lgr %r15, %r1 41 ; CHECK-B: la %r0, 177(%r1) 42 ; 43 ; CHECK-C-LABEL: f1: 44 ; CHECK-C: lgr %r15, %r1 45 ; CHECK-C: la %r4, 4095({{%r3,%r1|%r1,%r3}}) 46 ; 47 ; CHECK-D-LABEL: f1: 48 ; CHECK-D: lgr %r15, %r1 49 ; CHECK-D: lay %r5, 4096({{%r3,%r1|%r1,%r3}}) 50 ; 51 ; CHECK-E-LABEL: f1: 52 ; CHECK-E: lgr %r15, %r1 53 ; CHECK-E: lay %r6, 4271({{%r3,%r1|%r1,%r3}}) 54 ; 55 ; CHECK-FP-LABEL: f1: 56 ; CHECK-FP: lgr %r11, %r15 57 ; CHECK-FP: lmg %r6, %r15, 224(%r11) 58 %a = alloca i8, i64 %length 59 %b = getelementptr i8, i8 *%a, i64 1 60 %cindex = add i64 %index, 3919 61 %c = getelementptr i8, i8 *%a, i64 %cindex 62 %dindex = add i64 %index, 3920 63 %d = getelementptr i8, i8 *%a, i64 %dindex 64 %eindex = add i64 %index, 4095 65 %e = getelementptr i8, i8 *%a, i64 %eindex 66 %count = call i64 @bar(i8 *%a, i8 *%b, i8 *%c, i8 *%d, i8 *%e, i64 0, i64 0) 67 %res = add i64 %count, 1 68 ret i64 %res 69 } 70
