llvm-6502/test/CodeGen/ARM64/call-tailcalls.ll
Tim Northover 7b837d8c75 ARM64: initial backend import
This adds a second implementation of the AArch64 architecture to LLVM,
accessible in parallel via the "arm64" triple. The plan over the
coming weeks & months is to merge the two into a single backend,
during which time thorough code review should naturally occur.

Everything will be easier with the target in-tree though, hence this
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205090 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-29 10:18:08 +00:00

92 lines
2.3 KiB
LLVM

; RUN: llc < %s -mtriple=arm64-apple-ios7.0 | FileCheck %s
@t = weak global i32 ()* null
@x = external global i32, align 4
define void @t2() {
; CHECK-LABEL: t2:
; CHECK: adrp x[[GOTADDR:[0-9]+]], _t@GOTPAGE
; CHECK: ldr x[[ADDR:[0-9]+]], [x[[GOTADDR]], _t@GOTPAGEOFF]
; CHECK: ldr x[[DEST:[0-9]+]], [x[[ADDR]]]
; CHECK: br x[[DEST]]
%tmp = load i32 ()** @t
%tmp.upgrd.2 = tail call i32 %tmp()
ret void
}
define void @t3() {
; CHECK-LABEL: t3:
; CHECK: b _t2
tail call void @t2()
ret void
}
define double @t4(double %a) nounwind readonly ssp {
; CHECK-LABEL: t4:
; CHECK: b _sin
%tmp = tail call double @sin(double %a) nounwind readonly
ret double %tmp
}
define float @t5(float %a) nounwind readonly ssp {
; CHECK-LABEL: t5:
; CHECK: b _sinf
%tmp = tail call float @sinf(float %a) nounwind readonly
ret float %tmp
}
define void @t7() nounwind {
; CHECK-LABEL: t7:
; CHECK: b _foo
; CHECK: b _bar
br i1 undef, label %bb, label %bb1.lr.ph
bb1.lr.ph: ; preds = %entry
tail call void @bar() nounwind
ret void
bb: ; preds = %entry
tail call void @foo() nounwind
ret void
}
define i32 @t8(i32 %x) nounwind ssp {
; CHECK-LABEL: t8:
; CHECK: b _a
; CHECK: b _b
; CHECK: b _c
%and = and i32 %x, 1
%tobool = icmp eq i32 %and, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
%call = tail call i32 @a(i32 %x) nounwind
br label %return
if.end: ; preds = %entry
%and1 = and i32 %x, 2
%tobool2 = icmp eq i32 %and1, 0
br i1 %tobool2, label %if.end5, label %if.then3
if.then3: ; preds = %if.end
%call4 = tail call i32 @b(i32 %x) nounwind
br label %return
if.end5: ; preds = %if.end
%call6 = tail call i32 @c(i32 %x) nounwind
br label %return
return: ; preds = %if.end5, %if.then3, %if.then
%retval.0 = phi i32 [ %call, %if.then ], [ %call4, %if.then3 ], [ %call6, %if.end5 ]
ret i32 %retval.0
}
declare float @sinf(float) nounwind readonly
declare double @sin(double) nounwind readonly
declare void @bar() nounwind
declare void @foo() nounwind
declare i32 @a(i32)
declare i32 @b(i32)
declare i32 @c(i32)