forked from OSchip/llvm-project
82 lines
2.4 KiB
LLVM
82 lines
2.4 KiB
LLVM
; 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
|
|
}
|