244ad228f3
This patch handles cases where we have to save/restore the link register into the stack and and load/store instruction which use the stack are part of the outlined region. It checks that there will be no overflow introduced by the new offset and fixup these instructions accordingly. Differential Revision: https://reviews.llvm.org/D92934
232 lines
9.2 KiB
YAML
232 lines
9.2 KiB
YAML
# RUN: llc -mtriple=thumbv7-- -run-pass=prologepilog \
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# RUN: -run-pass=machine-outliner %s -o - | FileCheck %s
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--- |
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define void @CheckAddrModeT2_i12() { ret void }
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define void @CheckAddrModeT2_i8() { ret void }
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define void @CheckAddrModeT2_i8s4() { ret void }
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define void @CheckAddrModeT2_ldrex() { ret void }
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define void @CheckAddrModeT1_s() { ret void }
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define void @foo() { ret void }
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...
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---
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name: CheckAddrModeT2_i12
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $r1
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;CHECK-LABEL: name: CheckAddrModeT2_i12
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;CHECK: $r0 = tMOVr killed $r1, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @OUTLINED_FUNCTION_[[I12:[0-9]+]]
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;CHECK-NEXT: $r0 = t2LDRi12 $sp, 4088, 14 /* CC::al */, $noreg
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$r0 = tMOVr killed $r1, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r0 = t2LDRi12 $sp, 0, 14, $noreg
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$r0 = t2LDRi12 $sp, 4, 14, $noreg
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$r0 = t2LDRi12 $sp, 4086, 14, $noreg
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$r0 = t2LDRi12 $sp, 4088, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r0 = t2LDRi12 $sp, 0, 14, $noreg
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$r0 = t2LDRi12 $sp, 4, 14, $noreg
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$r0 = t2LDRi12 $sp, 4086, 14, $noreg
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$r0 = t2LDRi12 $sp, 4088, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r0 = t2LDRi12 $sp, 0, 14, $noreg
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$r0 = t2LDRi12 $sp, 4, 14, $noreg
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$r0 = t2LDRi12 $sp, 4086, 14, $noreg
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$r0 = t2LDRi12 $sp, 4088, 14, $noreg
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BX_RET 14, $noreg
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...
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---
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name: CheckAddrModeT2_i8
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $r1
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;CHECK-LABEL: name: CheckAddrModeT2_i8
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;CHECK: $r0 = tMOVr $r1, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @OUTLINED_FUNCTION_[[I8:[0-9]+]]
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;CHECK-NEXT: t2STRHi8 $r0, $sp, 248, 14 /* CC::al */, $noreg
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$r0 = tMOVr $r1, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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t2STRHi8 $r0, $sp, 0, 14, $noreg
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t2STRHi8 $r0, $sp, 4, 14, $noreg
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t2STRHi8 $r0, $sp, 247, 14, $noreg
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t2STRHi8 $r0, $sp, 248, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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t2STRHi8 $r0, $sp, 0, 14, $noreg
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t2STRHi8 $r0, $sp, 4, 14, $noreg
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t2STRHi8 $r0, $sp, 247, 14, $noreg
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t2STRHi8 $r0, $sp, 248, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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t2STRHi8 $r0, $sp, 0, 14, $noreg
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t2STRHi8 $r0, $sp, 4, 14, $noreg
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t2STRHi8 $r0, $sp, 247, 14, $noreg
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t2STRHi8 $r0, $sp, 248, 14, $noreg
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BX_RET 14, $noreg
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...
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---
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name: CheckAddrModeT2_i8s4
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $r1
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;CHECK-LABEL: name: CheckAddrModeT2_i8s4
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;CHECK: $r0 = tMOVr $r1, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @OUTLINED_FUNCTION_[[I8S4:[0-9]+]]
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;CHECK-NEXT: t2STRDi8 $r0, $r1, $sp, 254, 14 /* CC::al */, $noreg
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$r0 = tMOVr $r1, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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t2STRDi8 $r0, $r1, $sp, 0, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 8, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 253, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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t2STRDi8 $r0, $r1, $sp, 0, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 8, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 253, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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t2STRDi8 $r0, $r1, $sp, 0, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 8, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 253, 14, $noreg
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t2STRDi8 $r0, $r1, $sp, 254, 14, $noreg
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BX_RET 14, $noreg
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...
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---
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name: CheckAddrModeT2_ldrex
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $r1
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;CHECK-LABEL: name: CheckAddrModeT2_ldrex
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;CHECK: $r0 = tMOVr $r1, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @OUTLINED_FUNCTION_[[LDREX:[0-9]+]]
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;CHECK-NEXT: $r1 = t2LDREX $sp, 254, 14 /* CC::al */, $noreg
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$r0 = tMOVr $r1, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r1 = t2LDREX $sp, 0, 14, $noreg
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$r1 = t2LDREX $sp, 8, 14, $noreg
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$r1 = t2LDREX $sp, 253, 14, $noreg
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$r1 = t2LDREX $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r1 = t2LDREX $sp, 0, 14, $noreg
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$r1 = t2LDREX $sp, 8, 14, $noreg
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$r1 = t2LDREX $sp, 253, 14, $noreg
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$r1 = t2LDREX $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r1 = t2LDREX $sp, 0, 14, $noreg
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$r1 = t2LDREX $sp, 8, 14, $noreg
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$r1 = t2LDREX $sp, 253, 14, $noreg
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$r1 = t2LDREX $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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$r1 = t2LDREX $sp, 0, 14, $noreg
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$r1 = t2LDREX $sp, 8, 14, $noreg
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$r1 = t2LDREX $sp, 253, 14, $noreg
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$r1 = t2LDREX $sp, 254, 14, $noreg
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BX_RET 14, $noreg
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...
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---
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name: CheckAddrModeT1_s
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $r0, $r1
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;CHECK-LABEL: name: CheckAddrModeT1_s
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;CHECK: $r0 = tMOVr $r1, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @OUTLINED_FUNCTION_[[T1_S:[0-9]+]]
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;CHECK-NEXT: tSTRspi $r0, $sp, 254, 14 /* CC::al */, $noreg
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$r0 = tMOVr $r1, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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tSTRspi $r0, $sp, 0, 14, $noreg
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tSTRspi $r0, $sp, 4, 14, $noreg
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tSTRspi $r0, $sp, 253, 14, $noreg
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tSTRspi $r0, $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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tSTRspi $r0, $sp, 0, 14, $noreg
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tSTRspi $r0, $sp, 4, 14, $noreg
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tSTRspi $r0, $sp, 253, 14, $noreg
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tSTRspi $r0, $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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tSTRspi $r0, $sp, 0, 14, $noreg
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tSTRspi $r0, $sp, 4, 14, $noreg
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tSTRspi $r0, $sp, 253, 14, $noreg
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tSTRspi $r0, $sp, 254, 14, $noreg
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tBL 14, $noreg, @foo, implicit-def dead $lr, implicit $sp
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tSTRspi $r0, $sp, 0, 14, $noreg
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tSTRspi $r0, $sp, 4, 14, $noreg
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tSTRspi $r0, $sp, 253, 14, $noreg
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tSTRspi $r0, $sp, 254, 14, $noreg
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BX_RET 14, $noreg
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...
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---
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name: foo
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $lr
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BX_RET 14, $noreg
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;CHECK: name: OUTLINED_FUNCTION_[[LDREX]]
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;CHECK: early-clobber $sp = t2STR_PRE killed $lr, $sp, -8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -8
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @foo, implicit-def dead $lr, implicit $sp
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;CHECK-NEXT: $r1 = t2LDREX $sp, 2, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $r1 = t2LDREX $sp, 10, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $r1 = t2LDREX $sp, 255, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $lr, $sp = t2LDR_POST $sp, 8, 14 /* CC::al */, $noreg
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;CHECK: name: OUTLINED_FUNCTION_[[I8]]
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;CHECK: early-clobber $sp = t2STR_PRE killed $lr, $sp, -8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -8
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @foo, implicit-def dead $lr, implicit $sp
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;CHECK-NEXT: t2STRHi8 $r0, $sp, 8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: t2STRHi8 $r0, $sp, 12, 14 /* CC::al */, $noreg
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;CHECK-NEXT: t2STRHi8 $r0, $sp, 255, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $lr, $sp = t2LDR_POST $sp, 8, 14 /* CC::al */, $noreg
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;CHECK: name: OUTLINED_FUNCTION_[[I8S4]]
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;CHECK: early-clobber $sp = t2STR_PRE killed $lr, $sp, -8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -8
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @foo, implicit-def dead $lr, implicit $sp
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;CHECK-NEXT: t2STRDi8 $r0, $r1, $sp, 2, 14 /* CC::al */, $noreg
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;CHECK-NEXT: t2STRDi8 $r0, $r1, $sp, 10, 14 /* CC::al */, $noreg
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;CHECK-NEXT: t2STRDi8 $r0, $r1, $sp, 255, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $lr, $sp = t2LDR_POST $sp, 8, 14 /* CC::al */, $noreg
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;CHECK: name: OUTLINED_FUNCTION_[[I12]]
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;CHECK: early-clobber $sp = t2STR_PRE killed $lr, $sp, -8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -8
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @foo, implicit-def dead $lr, implicit $sp
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;CHECK-NEXT: $r0 = t2LDRi12 $sp, 8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $r0 = t2LDRi12 $sp, 12, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $r0 = t2LDRi12 $sp, 4094, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $lr, $sp = t2LDR_POST $sp, 8, 14 /* CC::al */, $noreg
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;CHECK: name: OUTLINED_FUNCTION_[[T1_S]]
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;CHECK: early-clobber $sp = t2STR_PRE killed $lr, $sp, -8, 14 /* CC::al */, $noreg
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 8
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;CHECK-NEXT: frame-setup CFI_INSTRUCTION offset $lr, -8
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;CHECK-NEXT: tBL 14 /* CC::al */, $noreg, @foo, implicit-def dead $lr, implicit $sp
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;CHECK-NEXT: tSTRspi $r0, $sp, 2, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tSTRspi $r0, $sp, 6, 14 /* CC::al */, $noreg
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;CHECK-NEXT: tSTRspi $r0, $sp, 255, 14 /* CC::al */, $noreg
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;CHECK-NEXT: $lr, $sp = t2LDR_POST $sp, 8, 14 /* CC::al */, $noreg
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