51 lines
1.2 KiB
LLVM
51 lines
1.2 KiB
LLVM
; 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
|
|
}
|