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