RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2025-04-06 23:31:48 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[AArch64] Enable shrink-wrapping by default.

Browse Source 
Differential Revision: http://reviews.llvm.org/D14360

rdar://problem/20820748


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253520 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Quentin Colombet 2015-11-18 23:12:20 +00:00
parent 5b7b529be0
commit 3fe74b8026
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/Target/AArch64/AArch64FrameLowering.h
View File

@ -60,6 +60,11 @@ public:
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
RegScavenger *RS) const override; RegScavenger *RS) const override;
/// Returns true if the target will correctly handle shrink wrapping.
bool enableShrinkWrapping(const MachineFunction &MF) const override {
return true;
}
}; };
} // End llvm namespace } // End llvm namespace

2
test/CodeGen/AArch64/aarch64-dynamic-stack-layout.ll
View File

@ -522,10 +522,10 @@ bb1:
; CHECK-LABEL: realign_conditional2 ; CHECK-LABEL: realign_conditional2
; Extra realignment in the prologue (performance issue). ; Extra realignment in the prologue (performance issue).
; CHECK: tbz {{.*}} .[[LABEL:.*]]
; CHECK: sub x9, sp, #32 // =32 ; CHECK: sub x9, sp, #32 // =32
; CHECK: and sp, x9, #0xffffffffffffffe0 ; CHECK: and sp, x9, #0xffffffffffffffe0
; CHECK: mov x19, sp ; CHECK: mov x19, sp
; CHECK: tbz {{.*}} .[[LABEL:.*]]
; Stack is realigned in a non-entry BB. ; Stack is realigned in a non-entry BB.
; CHECK: sub [[REG:x[01-9]+]], sp, #64 ; CHECK: sub [[REG:x[01-9]+]], sp, #64
; CHECK: and sp, [[REG]], #0xffffffffffffffe0 ; CHECK: and sp, [[REG]], #0xffffffffffffffe0