| # RUN: llc -march=mips64 -mcpu=mips64r6 -start-after=block-placement -o - %s | FileCheck %s |
| |
| # Check that MipsHazardSchedule sees through basic blocks with transient instructions. |
| # The mir code in this file isn't representative of the llvm-ir. |
| |
| --- | |
| ; ModuleID = 'test.ll' |
| source_filename = "test.c" |
| target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128" |
| target triple = "mips64-img-linux-gnu" |
| |
| ; Function Attrs: nounwind |
| define i32 @f(i32 signext %a) { |
| entry: |
| %retval = alloca i32, align 4 |
| %a.addr = alloca i32, align 4 |
| store i32 %a, i32* %a.addr, align 4 |
| %0 = load i32, i32* %a.addr, align 4 |
| %cmp = icmp sgt i32 %0, 5 |
| br i1 %cmp, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| %1 = load i32, i32* %a.addr, align 4 |
| %2 = load i32, i32* %a.addr, align 4 |
| %add = add nsw i32 %1, %2 |
| store i32 %add, i32* %retval, align 4 |
| br label %return |
| |
| if.else: ; preds = %entry |
| %3 = load i32, i32* %a.addr, align 4 |
| %call = call i32 @g(i32 signext %3) |
| store i32 %call, i32* %retval, align 4 |
| br label %return |
| |
| return: ; preds = %if.else, %if.then |
| %4 = load i32, i32* %retval, align 4 |
| ret i32 %4 |
| } |
| |
| declare i32 @g(i32 signext) |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.stackprotector(i8*, i8**) |
| |
| !llvm.ident = !{!0} |
| |
| !0 = !{!"clang version 4.0.0 "} |
| |
| ... |
| --- |
| # CHECK-LABEL: f: |
| # CHECK: bgtzc |
| # CHECK-NEXT: nop |
| # CHECK: bltzc |
| # CHECK-NEXT: nop |
| # CHECK: blezc |
| name: f |
| alignment: 3 |
| exposesReturnsTwice: false |
| legalized: false |
| regBankSelected: false |
| selected: false |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$a0_64' } |
| - { reg: '$t9_64' } |
| calleeSavedRegisters: [ '$fp', '$gp', '$ra', '$d12', '$d13', '$d14', '$d15', |
| '$f24', '$f25', '$f26', '$f27', '$f28', '$f29', |
| '$f30', '$f31', '$fp_64', '$f_hi24', '$f_hi25', |
| '$f_hi26', '$f_hi27', '$f_hi28', '$f_hi29', '$f_hi30', |
| '$f_hi31', '$gp_64', '$ra_64', '$s0', '$s1', '$s2', |
| '$s3', '$s4', '$s5', '$s6', '$s7', '$d24_64', '$d25_64', |
| '$d26_64', '$d27_64', '$d28_64', '$d29_64', '$d30_64', |
| '$d31_64', '$s0_64', '$s1_64', '$s2_64', '$s3_64', |
| '$s4_64', '$s5_64', '$s6_64', '$s7_64' ] |
| frameInfo: |
| isFrameAddressTaken: false |
| isReturnAddressTaken: false |
| hasStackMap: false |
| hasPatchPoint: false |
| stackSize: 32 |
| offsetAdjustment: 0 |
| maxAlignment: 8 |
| adjustsStack: true |
| hasCalls: true |
| maxCallFrameSize: 0 |
| hasOpaqueSPAdjustment: false |
| hasVAStart: false |
| hasMustTailInVarArgFunc: false |
| stack: |
| - { id: 0, name: retval, offset: -28, size: 4, alignment: 4 } |
| - { id: 1, name: a.addr, offset: -32, size: 4, alignment: 4 } |
| - { id: 2, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$ra_64' } |
| - { id: 3, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp_64' } |
| - { id: 4, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$gp_64' } |
| body: | |
| bb.0.entry: |
| successors: %bb.1.if.then(0x40000000), %bb.5.if.else(0x40000000) |
| liveins: $a0_64, $t9_64, $ra_64, $fp_64, $gp_64 |
| |
| $sp_64 = DADDiu $sp_64, -32 |
| CFI_INSTRUCTION def_cfa_offset 32 |
| SD killed $ra_64, $sp_64, 24 :: (store 8 into %stack.2) |
| SD killed $fp_64, $sp_64, 16 :: (store 8 into %stack.3) |
| SD killed $gp_64, $sp_64, 8 :: (store 8 into %stack.4) |
| CFI_INSTRUCTION offset $ra_64, -8 |
| CFI_INSTRUCTION offset $fp_64, -16 |
| CFI_INSTRUCTION offset $gp_64, -24 |
| CFI_INSTRUCTION def_cfa_register $fp_64 |
| $at_64 = LUi64 @f |
| $v0_64 = DADDu killed $at_64, $t9_64 |
| SW $a0, $sp_64, 0 :: (store 4 into %ir.a.addr) |
| BGTZC $a0, %bb.5.if.else, implicit-def $at |
| |
| bb.1.if.then: |
| successors: %bb.6.return(0x40000000), %bb.2.if.then(0x40000000) |
| liveins: $a0 |
| |
| BLTZC $a0, %bb.6.return, implicit-def $at |
| |
| bb.2.if.then: |
| successors: %bb.3.if.else(0x80000000) |
| $t8 = IMPLICIT_DEF |
| |
| bb.3.if.else: |
| successors: %bb.6.return(0x40000000), %bb.4.if.else(0x40000000) |
| liveins: $t8 |
| |
| BLEZC $t8, %bb.6.return, implicit-def $at |
| |
| bb.4.if.else: |
| successors: %bb.6.return(0x80000000) |
| liveins: $t8 |
| |
| $at = LW $sp_64, 0 :: (dereferenceable load 4 from %ir.a.addr) |
| $at = ADDu killed $at, $t8 |
| SW killed $at, $sp_64, 4 :: (store 4 into %ir.retval) |
| J %bb.6.return, implicit-def dead $at |
| |
| bb.5.if.else: |
| successors: %bb.6.return(0x80000000) |
| liveins: $v0_64 |
| |
| $gp_64 = DADDiu killed $v0_64, @f |
| $a0_64 = LW64 $sp_64, 0 :: (dereferenceable load 4 from %ir.a.addr) |
| $t9_64 = LD $gp_64, @g :: (load 8 from call-entry @g) |
| JALR64Pseudo $t9_64, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit $gp_64, implicit-def $sp, implicit-def $v0 |
| SW killed $v0, $sp_64, 4 :: (store 4 into %ir.retval) |
| |
| bb.6.return: |
| $v0 = LW $sp_64, 4 :: (dereferenceable load 4 from %ir.retval) |
| $gp_64 = LD $sp_64, 8 :: (load 8 from %stack.4) |
| $fp_64 = LD $sp_64, 16 :: (load 8 from %stack.3) |
| $ra_64 = LD $sp_64, 24 :: (load 8 from %stack.2) |
| $sp_64 = DADDiu $sp_64, 32 |
| PseudoReturn64 $ra_64 |
| |
| ... |
