diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp | 4 | ||||
| -rw-r--r-- | llvm/test/CodeGen/ARM/subtarget-no-movt.ll | 60 |
2 files changed, 60 insertions, 4 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp index d11de555fa3..01b4e19940d 100644 --- a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp +++ b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp @@ -476,7 +476,9 @@ bool ARMDAGToDAGISel::isShifterOpProfitable(const SDValue &Shift, unsigned ARMDAGToDAGISel::ConstantMaterializationCost(unsigned Val) const { if (Subtarget->isThumb()) { if (Val <= 255) return 1; // MOV - if (Subtarget->hasV6T2Ops() && Val <= 0xffff) return 1; // MOVW + if (Subtarget->hasV6T2Ops() && + (Val <= 0xffff || ARM_AM::getT2SOImmValSplatVal(Val) != -1)) + return 1; // MOVW if (Val <= 510) return 2; // MOV + ADDi8 if (~Val <= 255) return 2; // MOV + MVN if (ARM_AM::isThumbImmShiftedVal(Val)) return 2; // MOV + LSL diff --git a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll index cb61bde3f9c..da535bca069 100644 --- a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll +++ b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll @@ -1,24 +1,40 @@ ; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - | FileCheck -check-prefix=NO-OPTION %s ; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT %s ; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT %s -; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 | FileCheck -check-prefix=NO-OPTION %s -; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT %s -; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT %s +; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 | FileCheck -check-prefix=NO-OPTION-O0 %s +; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT-O0 %s +; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT-O0 %s + +target triple = "thumb-apple-darwin" ; NO-OPTION-LABEL: {{_?}}foo0 ; NO-OPTION: ldr [[R0:r[0-9]+]], [[L0:.*]] ; NO-OPTION: [[L0]]: ; NO-OPTION: .long 2296237089 +; NO-OPTION-O0-LABEL: {{_?}}foo0 +; NO-OPTION-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-OPTION-O0: [[L0]]: +; NO-OPTION-O0: .long 2296237089 + ; USE-MOVT-LABEL: {{_?}}foo0 ; USE-MOVT: movw [[R0:r[0-9]+]], #52257 ; USE-MOVT: movt [[R0]], #35037 +; USE-MOVT-O0-LABEL: {{_?}}foo0 +; USE-MOVT-O0: movw [[R0:r[0-9]+]], #52257 +; USE-MOVT-O0: movt [[R0]], #35037 + ; NO-USE-MOVT-LABEL: {{_?}}foo0 ; NO-USE-MOVT: ldr [[R0:r[0-9]+]], [[L0:.*]] ; NO-USE-MOVT: [[L0]]: ; NO-USE-MOVT: .long 2296237089 +; NO-USE-MOVT-O0-LABEL: {{_?}}foo0 +; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-USE-MOVT-O0: [[L0]]: +; NO-USE-MOVT-O0: .long 2296237089 + define i32 @foo0(i32 %a) #0 { %1 = xor i32 -1998730207, %a ret i32 %1 @@ -28,18 +44,56 @@ define i32 @foo0(i32 %a) #0 { ; NO-OPTION: movw [[R0:r[0-9]+]], #52257 ; NO-OPTION: movt [[R0]], #35037 +; NO-OPTION-O0-LABEL: {{_?}}foo1 +; NO-OPTION-O0: movw [[R0:r[0-9]+]], #52257 +; NO-OPTION-O0: movt [[R0]], #35037 + ; USE-MOVT-LABEL: {{_?}}foo1 ; USE-MOVT: movw [[R0:r[0-9]+]], #52257 ; USE-MOVT: movt [[R0]], #35037 +; USE-MOVT-O0-LABEL: {{_?}}foo1 +; USE-MOVT-O0: movw [[R0:r[0-9]+]], #52257 +; USE-MOVT-O0: movt [[R0]], #35037 + ; NO-USE-MOVT-LABEL: {{_?}}foo1 ; NO-USE-MOVT: ldr [[R0:r[0-9]+]], [[L0:.*]] ; NO-USE-MOVT: [[L0]]: ; NO-USE-MOVT: .long 2296237089 +; NO-USE-MOVT-O0-LABEL: {{_?}}foo1 +; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-USE-MOVT-O0: [[L0]]: +; NO-USE-MOVT-O0: .long 2296237089 + define i32 @foo1(i32 %a) { %1 = xor i32 -1998730207, %a ret i32 %1 } +; NO-OPTION-LABEL: {{_?}}foo2 +; NO-OPTION: mov.w [[R0:r[0-9]+]], #-536813568 + +; USE-MOVT-LABEL: {{_?}}foo2 +; USE-MOVT: mov.w [[R0:r[0-9]+]], #-536813568 + +; NO-USE-MOVT-LABEL: {{_?}}foo2 +; NO-USE-MOVT: mov.w [[R0:r[0-9]+]], #-536813568 + +; NO-OPTION-O0-LABEL: {{_?}}foo2 +; NO-OPTION-O0: movw [[R0:r[0-9]+]], #57344 +; NO-OPTION-O0: movt [[R0]], #57344 + +; USE-MOVT-O0-LABEL: {{_?}}foo2 +; USE-MOVT-O0: movw [[R0:r[0-9]+]], #57344 +; USE-MOVTT-O0: movt [[R0]], #57344 + +; NO-USE-MOVT-O0-LABEL: {{_?}}foo2 +; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-USE-MOVT-O0: [[L0]]: +; NO-USE-MOVT-O0: .long 3758153728 @ 0xe000e000 +define i32 @foo2() { + %1 = load i32, i32* inttoptr (i32 -536813568 to i32*) ; load from 0xe000e000 + ret i32 %1 +} attributes #0 = { "target-features"="+no-movt" } |
