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llvm-project/llvm/test/CodeGen/X86/shift-double.ll

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s --check-prefix=X86
; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=X64
; Shift i64 integers on 32-bit target
define i64 @test1(i64 %X, i8 %C) nounwind {
; X86-LABEL: test1:
; X86: # %bb.0:
; X86-NEXT: pushl %esi
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %esi
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl %esi, %eax
; X86-NEXT: shll %cl, %eax
; X86-NEXT: shldl %cl, %esi, %edx
; X86-NEXT: testb $32, %cl
; X86-NEXT: je .LBB0_2
; X86-NEXT: # %bb.1:
; X86-NEXT: movl %eax, %edx
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: .LBB0_2:
; X86-NEXT: popl %esi
; X86-NEXT: retl
;
; X64-LABEL: test1:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %ecx
; X64-NEXT: movq %rdi, %rax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shlq %cl, %rax
; X64-NEXT: retq
%shift.upgrd.1 = zext i8 %C to i64 ; <i64> [#uses=1]
%Y = shl i64 %X, %shift.upgrd.1 ; <i64> [#uses=1]
ret i64 %Y
}
define i64 @test2(i64 %X, i8 %C) nounwind {
; X86-LABEL: test2:
; X86: # %bb.0:
; X86-NEXT: pushl %esi
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %esi
; X86-NEXT: movl %esi, %edx
; X86-NEXT: sarl %cl, %edx
; X86-NEXT: shrdl %cl, %esi, %eax
; X86-NEXT: testb $32, %cl
; X86-NEXT: je .LBB1_2
; X86-NEXT: # %bb.1:
; X86-NEXT: sarl $31, %esi
; X86-NEXT: movl %edx, %eax
; X86-NEXT: movl %esi, %edx
; X86-NEXT: .LBB1_2:
; X86-NEXT: popl %esi
; X86-NEXT: retl
;
; X64-LABEL: test2:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %ecx
; X64-NEXT: movq %rdi, %rax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: sarq %cl, %rax
; X64-NEXT: retq
%shift.upgrd.2 = zext i8 %C to i64 ; <i64> [#uses=1]
%Y = ashr i64 %X, %shift.upgrd.2 ; <i64> [#uses=1]
ret i64 %Y
}
define i64 @test3(i64 %X, i8 %C) nounwind {
; X86-LABEL: test3:
; X86: # %bb.0:
; X86-NEXT: pushl %esi
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %esi
; X86-NEXT: movl %esi, %edx
; X86-NEXT: shrl %cl, %edx
; X86-NEXT: shrdl %cl, %esi, %eax
; X86-NEXT: testb $32, %cl
; X86-NEXT: je .LBB2_2
; X86-NEXT: # %bb.1:
; X86-NEXT: movl %edx, %eax
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: .LBB2_2:
; X86-NEXT: popl %esi
; X86-NEXT: retl
;
; X64-LABEL: test3:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %ecx
; X64-NEXT: movq %rdi, %rax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrq %cl, %rax
; X64-NEXT: retq
%shift.upgrd.3 = zext i8 %C to i64 ; <i64> [#uses=1]
%Y = lshr i64 %X, %shift.upgrd.3 ; <i64> [#uses=1]
ret i64 %Y
}
; Combine 2xi32/2xi16 shifts into SHLD
define i32 @test4(i32 %A, i32 %B, i8 %C) nounwind {
; X86-LABEL: test4:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shldl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test4:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shldl %cl, %esi, %eax
; X64-NEXT: retq
%shift.upgrd.4 = zext i8 %C to i32 ; <i32> [#uses=1]
%X = shl i32 %A, %shift.upgrd.4 ; <i32> [#uses=1]
%Cv = sub i8 32, %C ; <i8> [#uses=1]
%shift.upgrd.5 = zext i8 %Cv to i32 ; <i32> [#uses=1]
%Y = lshr i32 %B, %shift.upgrd.5 ; <i32> [#uses=1]
%Z = or i32 %Y, %X ; <i32> [#uses=1]
ret i32 %Z
}
define i16 @test5(i16 %A, i16 %B, i8 %C) nounwind {
; X86-LABEL: test5:
; X86: # %bb.0:
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: andb $15, %cl
; X86-NEXT: shldw %cl, %dx, %ax
; X86-NEXT: retl
;
; X64-LABEL: test5:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: andb $15, %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shldw %cl, %si, %ax
; X64-NEXT: # kill: def $ax killed $ax killed $eax
; X64-NEXT: retq
%shift.upgrd.6 = zext i8 %C to i16 ; <i16> [#uses=1]
%X = shl i16 %A, %shift.upgrd.6 ; <i16> [#uses=1]
%Cv = sub i8 16, %C ; <i8> [#uses=1]
%shift.upgrd.7 = zext i8 %Cv to i16 ; <i16> [#uses=1]
%Y = lshr i16 %B, %shift.upgrd.7 ; <i16> [#uses=1]
%Z = or i16 %Y, %X ; <i16> [#uses=1]
ret i16 %Z
}
; Combine 2xi32/2xi16 shifts into SHRD
define i32 @test6(i32 %A, i32 %B, i8 %C) nounwind {
; X86-LABEL: test6:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test6:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrdl %cl, %esi, %eax
; X64-NEXT: retq
%shift.upgrd.4 = zext i8 %C to i32 ; <i32> [#uses=1]
%X = lshr i32 %A, %shift.upgrd.4 ; <i32> [#uses=1]
%Cv = sub i8 32, %C ; <i8> [#uses=1]
%shift.upgrd.5 = zext i8 %Cv to i32 ; <i32> [#uses=1]
%Y = shl i32 %B, %shift.upgrd.5 ; <i32> [#uses=1]
%Z = or i32 %Y, %X ; <i32> [#uses=1]
ret i32 %Z
}
define i16 @test7(i16 %A, i16 %B, i8 %C) nounwind {
; X86-LABEL: test7:
; X86: # %bb.0:
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: andb $15, %cl
; X86-NEXT: shrdw %cl, %dx, %ax
; X86-NEXT: retl
;
; X64-LABEL: test7:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: andb $15, %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrdw %cl, %si, %ax
; X64-NEXT: # kill: def $ax killed $ax killed $eax
; X64-NEXT: retq
%shift.upgrd.6 = zext i8 %C to i16 ; <i16> [#uses=1]
%X = lshr i16 %A, %shift.upgrd.6 ; <i16> [#uses=1]
%Cv = sub i8 16, %C ; <i8> [#uses=1]
%shift.upgrd.7 = zext i8 %Cv to i16 ; <i16> [#uses=1]
%Y = shl i16 %B, %shift.upgrd.7 ; <i16> [#uses=1]
%Z = or i16 %Y, %X ; <i16> [#uses=1]
ret i16 %Z
}
; Shift i64 integers on 32-bit target by shift value less then 32 (PR14593)
define i64 @test8(i64 %val, i32 %bits) nounwind {
; X86-LABEL: test8:
; X86: # %bb.0:
; X86-NEXT: pushl %esi
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %esi
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl %esi, %eax
; X86-NEXT: shll %cl, %eax
; X86-NEXT: shldl %cl, %esi, %edx
; X86-NEXT: popl %esi
; X86-NEXT: retl
;
; X64-LABEL: test8:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %ecx
; X64-NEXT: movq %rdi, %rax
; X64-NEXT: andb $31, %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shlq %cl, %rax
; X64-NEXT: retq
%and = and i32 %bits, 31
%sh_prom = zext i32 %and to i64
%shl = shl i64 %val, %sh_prom
ret i64 %shl
}
define i64 @test9(i64 %val, i32 %bits) nounwind {
; X86-LABEL: test9:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: sarl %cl, %edx
; X86-NEXT: retl
;
; X64-LABEL: test9:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %ecx
; X64-NEXT: movq %rdi, %rax
; X64-NEXT: andb $31, %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: sarq %cl, %rax
; X64-NEXT: retq
%and = and i32 %bits, 31
%sh_prom = zext i32 %and to i64
%ashr = ashr i64 %val, %sh_prom
ret i64 %ashr
}
define i64 @test10(i64 %val, i32 %bits) nounwind {
; X86-LABEL: test10:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: shrl %cl, %edx
; X86-NEXT: retl
;
; X64-LABEL: test10:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %ecx
; X64-NEXT: movq %rdi, %rax
; X64-NEXT: andb $31, %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrq %cl, %rax
; X64-NEXT: retq
%and = and i32 %bits, 31
%sh_prom = zext i32 %and to i64
%lshr = lshr i64 %val, %sh_prom
ret i64 %lshr
}
; SHLD/SHRD manual shifts
define i32 @test11(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test11:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shldl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test11:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shldl %cl, %esi, %eax
; X64-NEXT: retq
%and = and i32 %bits, 31
%and32 = sub i32 32, %and
%sh_lo = lshr i32 %lo, %and32
%sh_hi = shl i32 %hi, %and
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test12(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test12:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test12:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %esi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrdl %cl, %edi, %eax
; X64-NEXT: retq
%and = and i32 %bits, 31
%and32 = sub i32 32, %and
%sh_lo = shl i32 %hi, %and32
%sh_hi = lshr i32 %lo, %and
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test13(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test13:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shldl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test13:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shldl %cl, %esi, %eax
; X64-NEXT: retq
%bits32 = sub i32 32, %bits
%sh_lo = lshr i32 %lo, %bits32
%sh_hi = shl i32 %hi, %bits
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test14(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test14:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test14:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %esi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrdl %cl, %edi, %eax
; X64-NEXT: retq
%bits32 = sub i32 32, %bits
%sh_lo = shl i32 %hi, %bits32
%sh_hi = lshr i32 %lo, %bits
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test15(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test15:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shldl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test15:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shldl %cl, %esi, %eax
; X64-NEXT: retq
%bits32 = xor i32 %bits, 31
%lo2 = lshr i32 %lo, 1
%sh_lo = lshr i32 %lo2, %bits32
%sh_hi = shl i32 %hi, %bits
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test16(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test16:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test16:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrdl %cl, %esi, %eax
; X64-NEXT: retq
%bits32 = xor i32 %bits, 31
%lo2 = shl i32 %lo, 1
%sh_lo = shl i32 %lo2, %bits32
%sh_hi = lshr i32 %hi, %bits
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test17(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test17:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shrdl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test17:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrdl %cl, %esi, %eax
; X64-NEXT: retq
%bits32 = xor i32 %bits, 31
%lo2 = add i32 %lo, %lo
%sh_lo = shl i32 %lo2, %bits32
%sh_hi = lshr i32 %hi, %bits
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
define i32 @test18(i32 %hi, i32 %lo, i32 %bits) nounwind {
; X86-LABEL: test18:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: shldl %cl, %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: test18:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %edi, %eax
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shldl %cl, %esi, %eax
; X64-NEXT: retq
%tbits = trunc i32 %bits to i8
%tand = and i8 %tbits, 31
%tand64 = sub i8 32, %tand
%and = zext i8 %tand to i32
%and64 = zext i8 %tand64 to i32
%sh_lo = lshr i32 %lo, %and64
%sh_hi = shl i32 %hi, %and
%sh = or i32 %sh_lo, %sh_hi
ret i32 %sh
}
; These are not valid shld/shrd patterns. When the shift amount modulo
; the bitwidth is zero, the result should be an OR of both operands not a
; shift.
define i32 @not_shld_i32(i32, i32, i32) {
; X86-LABEL: not_shld_i32:
; X86: # %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: shll %cl, %edx
; X86-NEXT: negb %cl
; X86-NEXT: shrl %cl, %eax
; X86-NEXT: orl %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: not_shld_i32:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %esi, %eax
; X64-NEXT: shll %cl, %edi
; X64-NEXT: negb %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shrl %cl, %eax
; X64-NEXT: orl %edi, %eax
; X64-NEXT: retq
%4 = and i32 %2, 31
%5 = shl i32 %0, %4
%6 = sub i32 0, %2
%7 = and i32 %6, 31
%8 = lshr i32 %1, %7
%9 = or i32 %5, %8
ret i32 %9
}
define i32 @not_shrd_i32(i32, i32, i32) {
; X86-LABEL: not_shrd_i32:
; X86: # %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: shrl %cl, %edx
; X86-NEXT: negb %cl
; X86-NEXT: shll %cl, %eax
; X86-NEXT: orl %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: not_shrd_i32:
; X64: # %bb.0:
; X64-NEXT: movl %edx, %ecx
; X64-NEXT: movl %esi, %eax
; X64-NEXT: shrl %cl, %edi
; X64-NEXT: negb %cl
; X64-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-NEXT: shll %cl, %eax
; X64-NEXT: orl %edi, %eax
; X64-NEXT: retq
%4 = and i32 %2, 31
%5 = lshr i32 %0, %4
%6 = sub i32 0, %2
%7 = and i32 %6, 31
%8 = shl i32 %1, %7
%9 = or i32 %5, %8
ret i32 %9
}
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