derek.holloway
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107 lines
4.0 KiB
LLVM
107 lines
4.0 KiB
LLVM
; Test for generation of jump table for ropi/rwpi
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; RUN: llc -relocation-model=static -mtriple=armv7a--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ARM --check-prefix=ARM_ABS
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; RUN: llc -relocation-model=ropi -mtriple=armv7a--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ARM --check-prefix=ARM_PC
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; RUN: llc -relocation-model=ropi-rwpi -mtriple=armv7a--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=ARM --check-prefix=ARM_PC
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; RUN: llc -relocation-model=static -mtriple=thumbv7m--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=THUMB2
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; RUN: llc -relocation-model=ropi -mtriple=thumbv7m--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=THUMB2
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; RUN: llc -relocation-model=ropi-rwpi -mtriple=thumbv7m--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=THUMB2
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; RUN: llc -relocation-model=static -mtriple=thumbv6m--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=THUMB1
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; RUN: llc -relocation-model=ropi -mtriple=thumbv6m--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=THUMB1
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; RUN: llc -relocation-model=ropi-rwpi -mtriple=thumbv6m--none-eabi -disable-block-placement < %s | FileCheck %s --check-prefix=CHECK --check-prefix=THUMB1
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declare void @exit0()
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declare void @exit1()
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declare void @exit2()
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declare void @exit3()
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declare void @exit4()
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define void @jump_table(i32 %val) {
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entry:
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switch i32 %val, label %default [ i32 1, label %lab1
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i32 2, label %lab2
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i32 3, label %lab3
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i32 4, label %lab4 ]
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default:
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tail call void @exit0()
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ret void
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lab1:
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tail call void @exit1()
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ret void
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lab2:
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tail call void @exit2()
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ret void
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lab3:
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tail call void @exit3()
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ret void
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lab4:
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tail call void @exit4()
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ret void
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; CHECK-LABEL: jump_table:
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; ARM: adr r[[R_TAB_BASE:[0-9]+]], [[LJTI:\.LJTI[0-9]+_[0-9]+]]
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; ARM_ABS: ldr pc, [r[[R_TAB_BASE]], r{{[0-9]+}}, lsl #2]
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; ARM_PC: ldr r[[R_OFFSET:[0-9]+]], [r[[R_TAB_BASE]], r{{[0-9]+}}, lsl #2]
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; ARM_PC: add pc, r[[R_TAB_BASE]], r[[R_OFFSET]]
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; ARM: [[LJTI]]
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; ARM_ABS: .long [[LBB1:\.LBB[0-9]+_[0-9]+]]
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; ARM_ABS: .long [[LBB2:\.LBB[0-9]+_[0-9]+]]
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; ARM_ABS: .long [[LBB3:\.LBB[0-9]+_[0-9]+]]
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; ARM_ABS: .long [[LBB4:\.LBB[0-9]+_[0-9]+]]
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; ARM_PC: .long [[LBB1:\.LBB[0-9]+_[0-9]+]]-[[LJTI]]
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; ARM_PC: .long [[LBB2:\.LBB[0-9]+_[0-9]+]]-[[LJTI]]
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; ARM_PC: .long [[LBB3:\.LBB[0-9]+_[0-9]+]]-[[LJTI]]
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; ARM_PC: .long [[LBB4:\.LBB[0-9]+_[0-9]+]]-[[LJTI]]
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; ARM: [[LBB1]]
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; ARM-NEXT: b exit1
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; ARM: [[LBB2]]
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; ARM-NEXT: b exit2
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; ARM: [[LBB3]]
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; ARM-NEXT: b exit3
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; ARM: [[LBB4]]
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; ARM-NEXT: b exit4
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; THUMB2: [[LCPI:\.LCPI[0-9]+_[0-9]+]]:
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; THUMB2: tbb [pc, r{{[0-9]+}}]
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; THUMB2: .byte ([[LBB1:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB2: .byte ([[LBB2:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB2: .byte ([[LBB3:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB2: .byte ([[LBB4:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB2: [[LBB1]]
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; THUMB2-NEXT: b exit1
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; THUMB2: [[LBB2]]
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; THUMB2-NEXT: b exit2
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; THUMB2: [[LBB3]]
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; THUMB2-NEXT: b exit3
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; THUMB2: [[LBB4]]
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; THUMB2-NEXT: b exit4
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; THUMB1: .p2align 2
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; THUMB1: add r[[x:[0-9]+]], pc
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; THUMB1: ldrb r[[x]], [r[[x]], #4]
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; THUMB1: lsls r[[x]], r[[x]], #1
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; THUMB1: [[LCPI:\.LCPI[0-9]+_[0-9]+]]:
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; THUMB1: add pc, r[[x]]
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; THUMB1: .p2align 2
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; THUMB1: .byte ([[LBB1:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB1: .byte ([[LBB2:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB1: .byte ([[LBB3:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB1: .byte ([[LBB4:\.LBB[0-9]+_[0-9]+]]-([[LCPI]]+4))/2
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; THUMB1: [[LBB1]]
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; THUMB1-NEXT: bl exit1
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; THUMB1: [[LBB2]]
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; THUMB1-NEXT: bl exit2
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; THUMB1: [[LBB3]]
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; THUMB1-NEXT: bl exit3
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; THUMB1: [[LBB4]]
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; THUMB1-NEXT: bl exit4
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}
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