diff options
| -rw-r--r-- | llvm/lib/Target/Mips/Mips16InstrInfo.cpp | 3 | ||||
| -rw-r--r-- | llvm/lib/Target/Mips/MipsSEInstrInfo.cpp | 3 | ||||
| -rw-r--r-- | llvm/test/CodeGen/Mips/adjust-callstack-sp.ll | 20 |
3 files changed, 26 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/Mips16InstrInfo.cpp b/llvm/lib/Target/Mips/Mips16InstrInfo.cpp index 00d449531a1..a49572efdbf 100644 --- a/llvm/lib/Target/Mips/Mips16InstrInfo.cpp +++ b/llvm/lib/Target/Mips/Mips16InstrInfo.cpp @@ -293,6 +293,9 @@ void Mips16InstrInfo::adjustStackPtrBigUnrestricted( void Mips16InstrInfo::adjustStackPtr(unsigned SP, int64_t Amount, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const { + if (Amount == 0) + return; + if (isInt<16>(Amount)) // need to change to addiu sp, ....and isInt<16> BuildAddiuSpImm(MBB, I, Amount); else diff --git a/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp b/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp index b99257985d4..cb38393f30d 100644 --- a/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp +++ b/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp @@ -364,6 +364,9 @@ void MipsSEInstrInfo::adjustStackPtr(unsigned SP, int64_t Amount, unsigned ADDu = STI.isABI_N64() ? Mips::DADDu : Mips::ADDu; unsigned ADDiu = STI.isABI_N64() ? Mips::DADDiu : Mips::ADDiu; + if (Amount == 0) + return; + if (isInt<16>(Amount))// addi sp, sp, amount BuildMI(MBB, I, DL, get(ADDiu), SP).addReg(SP).addImm(Amount); else { // Expand immediate that doesn't fit in 16-bit. diff --git a/llvm/test/CodeGen/Mips/adjust-callstack-sp.ll b/llvm/test/CodeGen/Mips/adjust-callstack-sp.ll new file mode 100644 index 00000000000..8c61a650a96 --- /dev/null +++ b/llvm/test/CodeGen/Mips/adjust-callstack-sp.ll @@ -0,0 +1,20 @@ +; RUN: llc < %s -march=mips -mcpu=mips16 | FileCheck %s -check-prefix=M16 +; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s -check-prefix=GP32 +; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s -check-prefix=GP32 +; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s -check-prefix=GP32 +; RUN: llc < %s -march=mips -mcpu=mips3 | FileCheck %s -check-prefix=GP64 +; RUN: llc < %s -march=mips -mcpu=mips64 | FileCheck %s -check-prefix=GP64 +; RUN: llc < %s -march=mips -mcpu=mips64r6 | FileCheck %s -check-prefix=GP64 + +declare void @bar(i32*) + +define void @foo(i32 %sz) { + ; ALL-LABEL: foo: + + ; M16-NOT: addiu $sp, 0 # 16 bit inst + ; GP32-NOT: addiu $sp, $sp, 0 + ; GP64-NOT: daddiu $sp, $sp, 0 + %a = alloca i32, i32 %sz + call void @bar(i32* %a) + ret void +} |
