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104 lines
2.7 KiB
104 lines
2.7 KiB
4 months ago
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# RUN: llc -mtriple thumbv6m-arm-none-eabi -run-pass=machine-cse -verify-machineinstrs -o - %s | FileCheck %s
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--- |
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "thumbv6m-arm-none-eabi"
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define i32 @funca(i64 %l1) {
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entry:
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%l2 = icmp ult i64 %l1, -177673816660004267
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%l3 = add i64 %l1, 401100203
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%rem.i = select i1 %l2, i64 %l1, i64 %l3
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%conv = trunc i64 %rem.i to i32
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ret i32 %conv
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}
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define i32 @funcb(i64 %l1) { ret i32 0 }
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...
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---
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name: funca
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tracksRegLiveness: true
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liveins:
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- { reg: '$r0', virtual-reg: '%0' }
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- { reg: '$r1', virtual-reg: '%1' }
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constants:
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- id: 0
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value: i32 401100203
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alignment: 4
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isTargetSpecific: false
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- id: 1
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value: i32 41367909
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alignment: 4
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isTargetSpecific: false
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body: |
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bb.0.entry:
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successors: %bb.1(0x40000000), %bb.2(0x40000000)
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liveins: $r0, $r1
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%1:tgpr = COPY $r1
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%0:tgpr = COPY $r0
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%2:tgpr = tLDRpci %const.0, 14, $noreg :: (load 4 from constant-pool)
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%3:tgpr, dead $cpsr = tADDrr %0, %2, 14, $noreg
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%4:tgpr = tLDRpci %const.1, 14, $noreg :: (load 4 from constant-pool)
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%5:tgpr, $cpsr = tADDrr %0, %2, 14, $noreg
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%6:tgpr, $cpsr = tADC %1, killed %4, 14, $noreg, implicit $cpsr
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tBcc %bb.2, 3, $cpsr
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bb.1.entry:
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successors: %bb.2(0x80000000)
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bb.2.entry:
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%7:tgpr = PHI %3, %bb.1, %0, %bb.0
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$r0 = COPY %7
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tBX_RET 14, $noreg, implicit $r0
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# CHECK-LABEL: name: funca
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# cpsr def must not be dead
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# CHECK: %3:tgpr, $cpsr = tADDrr %0, %2
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# CHECK-NOT: %5:tgpr, $cpsr = tADDrr %0, %2
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...
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---
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name: funcb
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tracksRegLiveness: true
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liveins:
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- { reg: '$r0', virtual-reg: '%0' }
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- { reg: '$r1', virtual-reg: '%1' }
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constants:
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- id: 0
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value: i32 401100203
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alignment: 4
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isTargetSpecific: false
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- id: 1
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value: i32 41367909
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alignment: 4
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isTargetSpecific: false
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body: |
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bb.0:
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successors: %bb.1(0x40000000), %bb.2(0x40000000)
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liveins: $r0, $r1
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%1:tgpr = COPY $r1
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%0:tgpr = COPY $r0
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%2:tgpr = tLDRpci %const.0, 14, $noreg :: (load 4 from constant-pool)
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%3:tgpr, dead $cpsr = tADDrr %0, %2, 14, $noreg
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%4:tgpr = tLDRpci %const.1, 14, $noreg :: (load 4 from constant-pool)
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%5:tgpr, dead $cpsr = tADDrr %0, %2, 14, $noreg
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%6:tgpr, $cpsr = tADDrr %1, killed %4, 14, $noreg
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tBcc %bb.2, 3, $cpsr
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bb.1:
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successors: %bb.2(0x80000000)
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bb.2:
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%7:tgpr = PHI %3, %bb.1, %0, %bb.0
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$r0 = COPY %7
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tBX_RET 14, $noreg, implicit $r0
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# CHECK-LABEL: name: funcb
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# cpsr def should be dead
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# CHECK: %3:tgpr, dead $cpsr = tADDrr %0, %2
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# CHECK-NOT: %5:tgpr, dead $cpsr = tADDrr %0, %2
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...
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