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[ARM] Enable shrink-wrapping by default.

Browse Source 
Differential Revision: http://reviews.llvm.org/D14357

rdar://problem/21942589

llvm-svn: 253411
This commit is contained in:
Quentin Colombet 2015-11-18 00:40:54 +00:00
parent 133cb3aa66
commit 4b5d176ddb
12 changed files with 32 additions and 18 deletions
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5
lib/Target/ARM/ARMFrameLowering.h
View File

@ -57,6 +57,11 @@ public:
void adjustForSegmentedStacks(MachineFunction &MF,
MachineBasicBlock &MBB) const override;
/// Returns true if the target will correctly handle shrink wrapping.
bool enableShrinkWrapping(const MachineFunction &MF) const override {
return true;
}
private:
void emitPushInst(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI, unsigned StmOpc,

8
test/CodeGen/ARM/call-tc.ll
View File

@ -83,9 +83,11 @@ declare void @foo() nounwind
define void @t7() nounwind {
entry:
; CHECKT2D-LABEL: t7:
; CHECKT2D: blxeq _foo
; CHECKT2D-NEXT: pop.w
; CHECKT2D-NEXT: b.w _foo
; CHECKT2D: it ne
; CHECKT2D-NEXT: bne.w _foo
; CHECKT2D-NEXT: push
; CHECKT2D-NEXT: mov r7, sp
; CHECKT2D-NEXT: blx _foo
br i1 undef, label %bb, label %bb1.lr.ph
bb1.lr.ph:

4
test/CodeGen/ARM/fold-stack-adjust.ll
View File

@ -1,4 +1,6 @@
; RUN: llc -mtriple=thumbv7-apple-none-macho < %s | FileCheck %s
; Disable shrink-wrapping on the first test otherwise we wouldn't
; exerce the path for PR18136.
; RUN: llc -mtriple=thumbv7-apple-none-macho < %s -enable-shrink-wrap=false | FileCheck %s
; RUN: llc -mtriple=thumbv6m-apple-none-macho -disable-fp-elim < %s | FileCheck %s --check-prefix=CHECK-T1
; RUN: llc -mtriple=thumbv7-apple-darwin-ios -disable-fp-elim < %s | FileCheck %s --check-prefix=CHECK-IOS
; RUN: llc -mtriple=thumbv7--linux-gnueabi -disable-fp-elim < %s | FileCheck %s --check-prefix=CHECK-LINUX

4
test/CodeGen/ARM/ifcvt5.ll
View File

@ -13,10 +13,10 @@ entry:
define i32 @t1(i32 %a, i32 %b) {
; A8-LABEL: t1:
; A8: poplt {r7, pc}
; A8: bxlt lr
; SWIFT-LABEL: t1:
; SWIFT: pop {r7, pc}
; SWIFT: bxlt lr
; SWIFT: pop {r7, pc}
entry:
%tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1]

2
test/CodeGen/ARM/ifcvt6.ll
View File

@ -3,7 +3,7 @@
define void @foo(i32 %X, i32 %Y) {
entry:
; CHECK: cmpne
; CHECK: pophi
; CHECK: bxhi lr
%tmp1 = icmp ult i32 %X, 4 ; <i1> [#uses=1]
%tmp4 = icmp eq i32 %Y, 0 ; <i1> [#uses=1]
%tmp7 = or i1 %tmp4, %tmp1 ; <i1> [#uses=1]

4
test/CodeGen/ARM/ifcvt8.ll
View File

@ -5,7 +5,9 @@
declare void @abort()
define fastcc void @t(%struct.SString* %word, i8 signext %c) {
; CHECK: popne
; CHECK-NOT: pop
; CHECK: bxne
; CHECK-NOT: pop
entry:
%tmp1 = icmp eq %struct.SString* %word, null ; <i1> [#uses=1]
br i1 %tmp1, label %cond_true, label %cond_false

2
test/CodeGen/ARM/machine-cse-cmp.ll
View File

@ -27,7 +27,7 @@ define void @f2() nounwind ssp {
entry:
; CHECK-LABEL: f2:
; CHECK: cmp
; CHECK: poplt
; CHECK: bxlt
; CHECK-NOT: cmp
; CHECK: movle
%0 = load i32, i32* @foo, align 4

2
test/CodeGen/ARM/thumb-alignment.ll
View File

@ -23,7 +23,7 @@ define i32* @bar() {
; CHECK: .globl baz
; CHECK-NEXT: .align 2
; CHECK: adr.w
; CHECK: tbb
define i32 @baz() {
%1 = load i32, i32* @c, align 4
switch i32 %1, label %7 [

6
test/CodeGen/Thumb2/ifcvt-compare.ll
View File

@ -19,7 +19,8 @@ f:
define void @f1(i32 %x) optsize {
; CHECK-LABEL: f1:
; CHECK: cmp r0, #1
; CHECK: it eq
; CHECK: it ne
; CHECK-NEXT: bxne lr
%p = icmp eq i32 %x, 1
br i1 %p, label %t, label %f
@ -34,7 +35,8 @@ f:
define void @f2(i32 %x) {
; CHECK-LABEL: f2:
; CHECK: cmp r0, #0
; CHECK: it eq
; CHECK: it ne
; CHECK-NEXT: bxne lr
%p = icmp eq i32 %x, 0
br i1 %p, label %t, label %f

7
test/CodeGen/Thumb2/thumb2-ifcvt1.ll
View File

@ -72,9 +72,10 @@ entry:
define void @t3(i32 %a, i32 %b) nounwind {
entry:
; CHECK-LABEL: t3:
; CHECK: itt ge
; CHECK: movge r0, r1
; CHECK: blge {{_?}}foo
; CHECK: it lt
; CHECK-NEXT: bxlt lr
; CHECK: mov r0, r1
; CHECK: bl {{_?}}foo
%tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1]
br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock

4
test/CodeGen/Thumb2/thumb2-ifcvt2.ll
View File

@ -8,7 +8,7 @@ entry:
; CHECK: it ne
; CHECK: cmpne
; CHECK: it hi
; CHECK: pophi {r7, pc}
; CHECK: bxhi lr
%tmp1 = icmp ult i32 %X, 4 ; <i1> [#uses=1]
%tmp4 = icmp eq i32 %Y, 0 ; <i1> [#uses=1]
%tmp7 = or i1 %tmp4, %tmp1 ; <i1> [#uses=1]
@ -69,7 +69,7 @@ define fastcc void @t1(%struct.SString* %word, i8 signext %c) {
entry:
; CHECK-LABEL: t1:
; CHECK: it ne
; CHECK: popne {r7, pc}
; CHECK: bxne lr
%tmp1 = icmp eq %struct.SString* %word, null ; <i1> [#uses=1]
br i1 %tmp1, label %cond_true, label %cond_false

2
test/CodeGen/Thumb2/v8_IT_5.ll
View File

@ -9,7 +9,7 @@
; CHECK-NEXT: b
; CHECK: [[JUMPTARGET]]:{{.*}}%if.else173
; CHECK-NEXT: mov.w
; CHECK-NEXT: pop
; CHECK-NEXT: bx lr
; CHECK-NEXT: %if.else145
; CHECK-NEXT: mov.w