derek.holloway
7502bf64a4
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43 lines
1.7 KiB
LLVM
43 lines
1.7 KiB
LLVM
; RUN: llc < %s -mtriple=mipsel -mcpu=mips32r2 | FileCheck %s -check-prefix=MIPS32
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; RUN: llc < %s -mtriple=mips64el -mcpu=mips64r2 | FileCheck %s -check-prefix=MIPS64
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declare <2 x i32> @llvm.cttz.v2i32(<2 x i32>, i1)
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define <2 x i32> @cttzv2i32(<2 x i32> %x) {
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entry:
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; MIPS32-DAG: addiu $[[R0:[0-9]+]], $4, -1
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; MIPS32-DAG: not $[[R1:[0-9]+]], $4
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; MIPS32-DAG: and $[[R2:[0-9]+]], $[[R1]], $[[R0]]
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; MIPS32-DAG: clz $[[R3:[0-9]+]], $[[R2]]
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; MIPS32-DAG: addiu $[[R4:[0-9]+]], $zero, 32
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; MIPS32-DAG: subu $2, $[[R4]], $[[R3]]
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; MIPS32-DAG: addiu $[[R5:[0-9]+]], $5, -1
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; MIPS32-DAG: not $[[R6:[0-9]+]], $5
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; MIPS32-DAG: and $[[R7:[0-9]+]], $[[R6]], $[[R5]]
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; MIPS32-DAG: clz $[[R8:[0-9]+]], $[[R7]]
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; MIPS32-DAG: jr $ra
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; MIPS32-DAG: subu $3, $[[R4]], $[[R8]]
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; MIPS64-DAG: sll $[[A0:[0-9]+]], $4, 0
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; MIPS64-DAG: addiu $[[R0:[0-9]+]], $[[A0]], -1
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; MIPS64-DAG: not $[[R1:[0-9]+]], $[[A0]]
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; MIPS64-DAG: and $[[R2:[0-9]+]], $[[R1]], $[[R0]]
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; MIPS64-DAG: clz $[[R3:[0-9]+]], $[[R2]]
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; MIPS64-DAG: addiu $[[R4:[0-9]+]], $zero, 32
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; MIPS64-DAG: subu $[[R5:[0-9]+]], $[[R4]], $[[R3]]
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; MIPS64-DAG: dsrl $[[R6:[0-9]+]], $4, 32
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; MIPS64-DAG: sll $[[R7:[0-9]+]], $[[R6]], 0
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; MIPS64-DAG: dext $[[R8:[0-9]+]], $[[R5]], 0, 32
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; MIPS64-DAG: addiu $[[R9:[0-9]+]], $[[R7]], -1
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; MIPS64-DAG: not $[[R10:[0-9]+]], $[[R7]]
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; MIPS64-DAG: and $[[R11:[0-9]+]], $[[R10]], $[[R9]]
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; MIPS64-DAG: clz $[[R12:[0-9]+]], $[[R11]]
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; MIPS64-DAG: subu $[[R13:[0-9]+]], $[[R4]], $[[R12]]
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; MIPS64-DAG: dsll $[[R14:[0-9]+]], $[[R13]], 32
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; MIPS64-DAG: or $2, $[[R8]], $[[R14]]
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%ret = call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %x, i1 true)
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ret <2 x i32> %ret
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}
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