llvm-6502/test/CodeGen/SystemZ/asm-01.ll
Ulrich Weigand b503b49b51 [SystemZ] Add CodeGen test cases
This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 16:17:29 +00:00

62 lines
1.4 KiB
LLVM

; Test the "Q" asm constraint, which accepts addresses that have a base
; and a 12-bit displacement.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check the lowest range.
define void @f1(i64 %base) {
; CHECK: f1:
; CHECK: blah 0(%r2)
; CHECK: br %r14
%addr = inttoptr i64 %base to i64 *
call void asm "blah $0", "=*Q" (i64 *%addr)
ret void
}
; Check the next lowest byte.
define void @f2(i64 %base) {
; CHECK: f2:
; CHECK: aghi %r2, -1
; CHECK: blah 0(%r2)
; CHECK: br %r14
%add = add i64 %base, -1
%addr = inttoptr i64 %add to i64 *
call void asm "blah $0", "=*Q" (i64 *%addr)
ret void
}
; Check the highest range.
define void @f3(i64 %base) {
; CHECK: f3:
; CHECK: blah 4095(%r2)
; CHECK: br %r14
%add = add i64 %base, 4095
%addr = inttoptr i64 %add to i64 *
call void asm "blah $0", "=*Q" (i64 *%addr)
ret void
}
; Check the next highest byte.
define void @f4(i64 %base) {
; CHECK: f4:
; CHECK: aghi %r2, 4096
; CHECK: blah 0(%r2)
; CHECK: br %r14
%add = add i64 %base, 4096
%addr = inttoptr i64 %add to i64 *
call void asm "blah $0", "=*Q" (i64 *%addr)
ret void
}
; Check that indices aren't allowed
define void @f5(i64 %base, i64 %index) {
; CHECK: f5:
; CHECK: agr %r2, %r3
; CHECK: blah 0(%r2)
; CHECK: br %r14
%add = add i64 %base, %index
%addr = inttoptr i64 %add to i64 *
call void asm "blah $0", "=*Q" (i64 *%addr)
ret void
}