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https://github.com/c64scene-ar/llvm-6502.git
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fbe7448e5d
target cannot be determined accurately. This is the case for NaCl where the sandboxing instructions are added in MC layer, after the MipsLongBranch pass. It is also the case when the code has inline assembly. Instead of calculating offset in the MipsLongBranch pass, use %hi(sym1 - sym2) and %lo(sym1 - sym2) expressions that are resolved during the fixup. This patch also deletes microMIPS test file test/CodeGen/Mips/micromips-long-branch.ll and implements microMIPS CHECKs in a much simpler way in a file test/CodeGen/Mips/longbranch.ll, together with MIPS32 and MIPS64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207656 91177308-0d34-0410-b5e6-96231b3b80d8
133 lines
4.6 KiB
LLVM
133 lines
4.6 KiB
LLVM
; RUN: llc -march=mipsel < %s | FileCheck %s
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; RUN: llc -march=mipsel -force-mips-long-branch -O3 < %s \
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; RUN: | FileCheck %s -check-prefix=O32
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; RUN: llc -march=mips64el -mcpu=mips4 -mattr=n64 -force-mips-long-branch -O3 \
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; RUN: < %s | FileCheck %s -check-prefix=N64
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; RUN: llc -march=mips64el -mcpu=mips64 -mattr=n64 -force-mips-long-branch -O3 \
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; RUN: < %s | FileCheck %s -check-prefix=N64
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; RUN: llc -march=mipsel -mcpu=mips32r2 -mattr=micromips \
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; RUN: -force-mips-long-branch -O3 < %s | FileCheck %s -check-prefix=MICROMIPS
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@x = external global i32
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define void @test1(i32 %s) {
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entry:
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%cmp = icmp eq i32 %s, 0
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br i1 %cmp, label %end, label %then
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then:
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store i32 1, i32* @x, align 4
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br label %end
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end:
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ret void
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; First check the normal version (without long branch). beqz jumps to return,
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; and fallthrough block stores 1 to global variable.
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; CHECK: lui $[[R0:[0-9]+]], %hi(_gp_disp)
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; CHECK: addiu $[[R0]], $[[R0]], %lo(_gp_disp)
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; CHECK: beqz $4, $[[BB0:BB[0-9_]+]]
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; CHECK: addu $[[GP:[0-9]+]], $[[R0]], $25
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; CHECK: lw $[[R1:[0-9]+]], %got(x)($[[GP]])
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; CHECK: addiu $[[R2:[0-9]+]], $zero, 1
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; CHECK: sw $[[R2]], 0($[[R1]])
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; CHECK: $[[BB0]]:
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; CHECK: jr $ra
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; CHECK: nop
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; Check the MIPS32 version. Check that branch logic is inverted, so that the
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; target of the new branch (bnez) is the fallthrough block of the original
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; branch. Check that fallthrough block of the new branch contains long branch
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; expansion which at the end indirectly jumps to the target of the original
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; branch.
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; O32: lui $[[R0:[0-9]+]], %hi(_gp_disp)
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; O32: addiu $[[R0]], $[[R0]], %lo(_gp_disp)
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; O32: bnez $4, $[[BB0:BB[0-9_]+]]
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; O32: addu $[[GP:[0-9]+]], $[[R0]], $25
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; Check for long branch expansion:
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; O32: addiu $sp, $sp, -8
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; O32-NEXT: sw $ra, 0($sp)
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; O32-NEXT: lui $1, %hi(($[[BB2:BB[0-9_]+]])-($[[BB1:BB[0-9_]+]]))
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; O32-NEXT: bal $[[BB1]]
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; O32-NEXT: addiu $1, $1, %lo(($[[BB2]])-($[[BB1]]))
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; O32-NEXT: $[[BB1]]:
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; O32-NEXT: addu $1, $ra, $1
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; O32-NEXT: lw $ra, 0($sp)
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; O32-NEXT: jr $1
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; O32-NEXT: addiu $sp, $sp, 8
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; O32: $[[BB0]]:
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; O32: lw $[[R1:[0-9]+]], %got(x)($[[GP]])
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; O32: addiu $[[R2:[0-9]+]], $zero, 1
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; O32: sw $[[R2]], 0($[[R1]])
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; O32: $[[BB2]]:
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; O32: jr $ra
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; O32: nop
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; Check the MIPS64 version.
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; N64: lui $[[R0:[0-9]+]], %hi(%neg(%gp_rel(test1)))
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; N64: bnez $4, $[[BB0:BB[0-9_]+]]
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; N64: daddu $[[R1:[0-9]+]], $[[R0]], $25
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; Check for long branch expansion:
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; N64: daddiu $sp, $sp, -16
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; N64-NEXT: sd $ra, 0($sp)
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; N64-NEXT: lui $1, %highest(($[[BB2:BB[0-9_]+]])-($[[BB1:BB[0-9_]+]]))
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; N64-NEXT: daddiu $1, $1, %higher(($[[BB2]])-($[[BB1]]))
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; N64-NEXT: dsll $1, $1, 16
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; N64-NEXT: daddiu $1, $1, %hi(($[[BB2]])-($[[BB1]]))
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; N64-NEXT: dsll $1, $1, 16
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; N64-NEXT: bal $[[BB1]]
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; N64-NEXT: daddiu $1, $1, %lo(($[[BB2]])-($[[BB1]]))
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; N64-NEXT: $[[BB1]]:
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; N64-NEXT: daddu $1, $ra, $1
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; N64-NEXT: ld $ra, 0($sp)
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; N64-NEXT: jr $1
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; N64-NEXT: daddiu $sp, $sp, 16
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; N64: $[[BB0]]:
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; N64: daddiu $[[GP:[0-9]+]], $[[R1]], %lo(%neg(%gp_rel(test1)))
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; N64: ld $[[R2:[0-9]+]], %got_disp(x)($[[GP]])
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; N64: addiu $[[R3:[0-9]+]], $zero, 1
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; N64: sw $[[R3]], 0($[[R2]])
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; N64: $[[BB2]]:
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; N64: jr $ra
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; N64: nop
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; Check the microMIPS version.
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; MICROMIPS: lui $[[R0:[0-9]+]], %hi(_gp_disp)
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; MICROMIPS: addiu $[[R0]], $[[R0]], %lo(_gp_disp)
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; MICROMIPS: bnez $4, $[[BB0:BB[0-9_]+]]
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; MICROMIPS: addu $[[GP:[0-9]+]], $[[R0]], $25
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; Check for long branch expansion:
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; MICROMIPS: addiu $sp, $sp, -8
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; MICROMIPS-NEXT: sw $ra, 0($sp)
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; MICROMIPS-NEXT: lui $1, %hi(($[[BB2:BB[0-9_]+]])-($[[BB1:BB[0-9_]+]]))
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; MICROMIPS-NEXT: bal $[[BB1]]
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; MICROMIPS-NEXT: addiu $1, $1, %lo(($[[BB2]])-($[[BB1]]))
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; MICROMIPS-NEXT: $[[BB1]]:
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; MICROMIPS-NEXT: addu $1, $ra, $1
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; MICROMIPS-NEXT: lw $ra, 0($sp)
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; MICROMIPS-NEXT: jr $1
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; MICROMIPS-NEXT: addiu $sp, $sp, 8
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; MICROMIPS: $[[BB0]]:
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; MICROMIPS: lw $[[R1:[0-9]+]], %got(x)($[[GP]])
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; MICROMIPS: addiu $[[R2:[0-9]+]], $zero, 1
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; MICROMIPS: sw $[[R2]], 0($[[R1]])
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; MICROMIPS: $[[BB2]]:
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; MICROMIPS: jr $ra
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; MICROMIPS: nop
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}
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