derek.holloway
7502bf64a4
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198 lines
4.9 KiB
LLVM
198 lines
4.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
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; RUN: llc < %s -mtriple=i686-- -mattr=+lzcnt | FileCheck %s --check-prefix=X86
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; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -mattr=+lzcnt | FileCheck %s --check-prefix=X32
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; RUN: llc < %s -mtriple=x86_64-- -mattr=+lzcnt | FileCheck %s --check-prefix=X64
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declare i8 @llvm.ctlz.i8(i8, i1) nounwind readnone
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declare i16 @llvm.ctlz.i16(i16, i1) nounwind readnone
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declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone
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declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone
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define i8 @t1(i8 %x) nounwind {
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; X86-LABEL: t1:
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; X86: # %bb.0:
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; X86-NEXT: movzbl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: lzcntl %eax, %eax
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; X86-NEXT: addl $-24, %eax
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; X86-NEXT: # kill: def $al killed $al killed $eax
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; X86-NEXT: retl
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;
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; X32-LABEL: t1:
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; X32: # %bb.0:
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; X32-NEXT: movzbl %dil, %eax
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; X32-NEXT: lzcntl %eax, %eax
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; X32-NEXT: addl $-24, %eax
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; X32-NEXT: # kill: def $al killed $al killed $eax
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; X32-NEXT: retq
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;
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; X64-LABEL: t1:
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; X64: # %bb.0:
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; X64-NEXT: movzbl %dil, %eax
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; X64-NEXT: lzcntl %eax, %eax
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; X64-NEXT: addl $-24, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%tmp = tail call i8 @llvm.ctlz.i8( i8 %x, i1 false )
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ret i8 %tmp
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}
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define i16 @t2(i16 %x) nounwind {
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; X86-LABEL: t2:
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; X86: # %bb.0:
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; X86-NEXT: lzcntw {{[0-9]+}}(%esp), %ax
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; X86-NEXT: retl
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;
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; X32-LABEL: t2:
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; X32: # %bb.0:
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; X32-NEXT: lzcntw %di, %ax
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; X32-NEXT: retq
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;
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; X64-LABEL: t2:
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; X64: # %bb.0:
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; X64-NEXT: lzcntw %di, %ax
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; X64-NEXT: retq
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%tmp = tail call i16 @llvm.ctlz.i16( i16 %x, i1 false )
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ret i16 %tmp
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}
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define i32 @t3(i32 %x) nounwind {
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; X86-LABEL: t3:
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; X86: # %bb.0:
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; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: retl
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;
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; X32-LABEL: t3:
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; X32: # %bb.0:
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; X32-NEXT: lzcntl %edi, %eax
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; X32-NEXT: retq
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;
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; X64-LABEL: t3:
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; X64: # %bb.0:
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; X64-NEXT: lzcntl %edi, %eax
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; X64-NEXT: retq
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%tmp = tail call i32 @llvm.ctlz.i32( i32 %x, i1 false )
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ret i32 %tmp
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}
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define i64 @t4(i64 %x) nounwind {
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; X86-LABEL: t4:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: testl %eax, %eax
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; X86-NEXT: jne .LBB3_1
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; X86-NEXT: # %bb.2:
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; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: addl $32, %eax
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; X86-NEXT: xorl %edx, %edx
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; X86-NEXT: retl
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; X86-NEXT: .LBB3_1:
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; X86-NEXT: lzcntl %eax, %eax
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; X86-NEXT: xorl %edx, %edx
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; X86-NEXT: retl
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;
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; X32-LABEL: t4:
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; X32: # %bb.0:
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; X32-NEXT: lzcntq %rdi, %rax
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; X32-NEXT: retq
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;
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; X64-LABEL: t4:
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; X64: # %bb.0:
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; X64-NEXT: lzcntq %rdi, %rax
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; X64-NEXT: retq
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%tmp = tail call i64 @llvm.ctlz.i64( i64 %x, i1 false )
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ret i64 %tmp
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}
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define i8 @t5(i8 %x) nounwind {
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; X86-LABEL: t5:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: shll $24, %eax
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; X86-NEXT: lzcntl %eax, %eax
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; X86-NEXT: # kill: def $al killed $al killed $eax
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; X86-NEXT: retl
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;
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; X32-LABEL: t5:
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; X32: # %bb.0:
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; X32-NEXT: shll $24, %edi
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; X32-NEXT: lzcntl %edi, %eax
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; X32-NEXT: # kill: def $al killed $al killed $eax
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; X32-NEXT: retq
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;
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; X64-LABEL: t5:
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; X64: # %bb.0:
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; X64-NEXT: shll $24, %edi
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; X64-NEXT: lzcntl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%tmp = tail call i8 @llvm.ctlz.i8( i8 %x, i1 true )
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ret i8 %tmp
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}
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define i16 @t6(i16 %x) nounwind {
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; X86-LABEL: t6:
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; X86: # %bb.0:
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; X86-NEXT: lzcntw {{[0-9]+}}(%esp), %ax
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; X86-NEXT: retl
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;
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; X32-LABEL: t6:
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; X32: # %bb.0:
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; X32-NEXT: lzcntw %di, %ax
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; X32-NEXT: retq
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;
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; X64-LABEL: t6:
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; X64: # %bb.0:
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; X64-NEXT: lzcntw %di, %ax
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; X64-NEXT: retq
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%tmp = tail call i16 @llvm.ctlz.i16( i16 %x, i1 true )
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ret i16 %tmp
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}
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define i32 @t7(i32 %x) nounwind {
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; X86-LABEL: t7:
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; X86: # %bb.0:
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; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: retl
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;
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; X32-LABEL: t7:
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; X32: # %bb.0:
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; X32-NEXT: lzcntl %edi, %eax
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; X32-NEXT: retq
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;
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; X64-LABEL: t7:
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; X64: # %bb.0:
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; X64-NEXT: lzcntl %edi, %eax
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; X64-NEXT: retq
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%tmp = tail call i32 @llvm.ctlz.i32( i32 %x, i1 true )
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ret i32 %tmp
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}
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define i64 @t8(i64 %x) nounwind {
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; X86-LABEL: t8:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: testl %eax, %eax
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; X86-NEXT: jne .LBB7_1
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; X86-NEXT: # %bb.2:
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; X86-NEXT: lzcntl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: addl $32, %eax
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; X86-NEXT: xorl %edx, %edx
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; X86-NEXT: retl
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; X86-NEXT: .LBB7_1:
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; X86-NEXT: lzcntl %eax, %eax
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; X86-NEXT: xorl %edx, %edx
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; X86-NEXT: retl
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;
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; X32-LABEL: t8:
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; X32: # %bb.0:
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; X32-NEXT: lzcntq %rdi, %rax
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; X32-NEXT: retq
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;
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; X64-LABEL: t8:
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; X64: # %bb.0:
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; X64-NEXT: lzcntq %rdi, %rax
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; X64-NEXT: retq
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%tmp = tail call i64 @llvm.ctlz.i64( i64 %x, i1 true )
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ret i64 %tmp
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}
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