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96 lines
1.8 KiB
LLVM
96 lines
1.8 KiB
LLVM
; Test loads of symbolic addresses when generating small-model non-PIC.
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; All addresses can be treated as PC
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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@e4 = external global i32
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@d4 = global i32 1
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@e2 = external global i32, align 2
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@d2 = global i32 1, align 2
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@e1 = external global i32, align 1
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@d1 = global i32 1, align 1
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declare void @ef()
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define void @df() {
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ret void
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}
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declare void @foo(i32 *)
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; Test a load of a fully-aligned external variable.
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define i32 *@f1() {
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; CHECK: f1:
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; CHECK: larl %r2, e4
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; CHECK-NEXT: br %r14
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ret i32 *@e4
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}
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; Test a load of a fully-aligned local variable.
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define i32 *@f2() {
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; CHECK: f2:
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; CHECK: larl %r2, d4
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; CHECK-NEXT: br %r14
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ret i32 *@d4
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}
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; Test a load of a 2-byte-aligned external variable.
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define i32 *@f3() {
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; CHECK: f3:
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; CHECK: larl %r2, e2
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; CHECK-NEXT: br %r14
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ret i32 *@e2
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}
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; Test a load of a 2-byte-aligned local variable.
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define i32 *@f4() {
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; CHECK: f4:
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; CHECK: larl %r2, d2
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; CHECK-NEXT: br %r14
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ret i32 *@d2
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}
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; Test a load of an unaligned external variable, which must go via the GOT.
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define i32 *@f5() {
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; CHECK: f5:
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; CHECK: lgrl %r2, e1@GOT
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; CHECK-NEXT: br %r14
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ret i32 *@e1
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}
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; Test a load of an unaligned local variable, which must go via the GOT.
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define i32 *@f6() {
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; CHECK: f6:
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; CHECK: lgrl %r2, d1@GOT
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; CHECK-NEXT: br %r14
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ret i32 *@d1
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}
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; Test a load of an external function.
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define void() *@f7() {
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; CHECK: f7:
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; CHECK: larl %r2, ef
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; CHECK-NEXT: br %r14
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ret void() *@ef
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}
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; Test a load of a local function.
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define void() *@f8() {
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; CHECK: f8:
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; CHECK: larl %r2, df
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; CHECK-NEXT: br %r14
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ret void() *@df
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}
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; Test that LARL can be rematerialized.
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define i32 @f9() {
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; CHECK: f9:
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; CHECK: larl %r2, d2
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; CHECK: brasl %r14, foo@PLT
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; CHECK: larl %r2, d2
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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call void @foo(i32 *@d2)
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call void @foo(i32 *@d2)
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ret i32 0
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}
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