llvm-project/llvm/test/CodeGen/X86/rotate.ll

681 lines
16 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-linux | FileCheck %s --check-prefix=32
; RUN: llc < %s -mtriple=x86_64-unknown-linux | FileCheck %s --check-prefix=64
define i64 @rotl64(i64 %A, i8 %Amt) nounwind {
; 32-LABEL: rotl64:
; 32: # %bb.0:
; 32-NEXT: pushl %ebx
; 32-NEXT: pushl %edi
; 32-NEXT: pushl %esi
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movl {{[0-9]+}}(%esp), %esi
; 32-NEXT: movl {{[0-9]+}}(%esp), %edi
; 32-NEXT: movl %esi, %eax
; 32-NEXT: shll %cl, %eax
; 32-NEXT: movl %edi, %edx
; 32-NEXT: shldl %cl, %esi, %edx
; 32-NEXT: testb $32, %cl
; 32-NEXT: je .LBB0_2
; 32-NEXT: # %bb.1:
; 32-NEXT: movl %eax, %edx
; 32-NEXT: xorl %eax, %eax
; 32-NEXT: .LBB0_2:
; 32-NEXT: movb $64, %ch
; 32-NEXT: subb %cl, %ch
; 32-NEXT: movl %edi, %ebx
; 32-NEXT: movb %ch, %cl
; 32-NEXT: shrl %cl, %ebx
; 32-NEXT: shrdl %cl, %edi, %esi
; 32-NEXT: testb $32, %ch
; 32-NEXT: je .LBB0_4
; 32-NEXT: # %bb.3:
; 32-NEXT: movl %ebx, %esi
; 32-NEXT: xorl %ebx, %ebx
; 32-NEXT: .LBB0_4:
; 32-NEXT: orl %ebx, %edx
; 32-NEXT: orl %esi, %eax
; 32-NEXT: popl %esi
; 32-NEXT: popl %edi
; 32-NEXT: popl %ebx
; 32-NEXT: retl
;
; 64-LABEL: rotl64:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rolq %cl, %rdi
; 64-NEXT: movq %rdi, %rax
; 64-NEXT: retq
%shift.upgrd.1 = zext i8 %Amt to i64
%B = shl i64 %A, %shift.upgrd.1
%Amt2 = sub i8 64, %Amt
%shift.upgrd.2 = zext i8 %Amt2 to i64
%C = lshr i64 %A, %shift.upgrd.2
%D = or i64 %B, %C
ret i64 %D
}
define i64 @rotr64(i64 %A, i8 %Amt) nounwind {
; 32-LABEL: rotr64:
; 32: # %bb.0:
; 32-NEXT: pushl %ebx
; 32-NEXT: pushl %edi
; 32-NEXT: pushl %esi
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movl {{[0-9]+}}(%esp), %edi
; 32-NEXT: movl {{[0-9]+}}(%esp), %esi
; 32-NEXT: movl %esi, %edx
; 32-NEXT: shrl %cl, %edx
; 32-NEXT: movl %edi, %eax
; 32-NEXT: shrdl %cl, %esi, %eax
; 32-NEXT: testb $32, %cl
; 32-NEXT: je .LBB1_2
; 32-NEXT: # %bb.1:
; 32-NEXT: movl %edx, %eax
; 32-NEXT: xorl %edx, %edx
; 32-NEXT: .LBB1_2:
; 32-NEXT: movb $64, %ch
; 32-NEXT: subb %cl, %ch
; 32-NEXT: movl %edi, %ebx
; 32-NEXT: movb %ch, %cl
; 32-NEXT: shll %cl, %ebx
; 32-NEXT: shldl %cl, %edi, %esi
; 32-NEXT: testb $32, %ch
; 32-NEXT: je .LBB1_4
; 32-NEXT: # %bb.3:
; 32-NEXT: movl %ebx, %esi
; 32-NEXT: xorl %ebx, %ebx
; 32-NEXT: .LBB1_4:
; 32-NEXT: orl %esi, %edx
; 32-NEXT: orl %ebx, %eax
; 32-NEXT: popl %esi
; 32-NEXT: popl %edi
; 32-NEXT: popl %ebx
; 32-NEXT: retl
;
; 64-LABEL: rotr64:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rorq %cl, %rdi
; 64-NEXT: movq %rdi, %rax
; 64-NEXT: retq
%shift.upgrd.3 = zext i8 %Amt to i64
%B = lshr i64 %A, %shift.upgrd.3
%Amt2 = sub i8 64, %Amt
%shift.upgrd.4 = zext i8 %Amt2 to i64
%C = shl i64 %A, %shift.upgrd.4
%D = or i64 %B, %C
ret i64 %D
}
define i64 @rotli64(i64 %A) nounwind {
; 32-LABEL: rotli64:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; 32-NEXT: movl %ecx, %edx
; 32-NEXT: shldl $5, %eax, %edx
; 32-NEXT: shldl $5, %ecx, %eax
; 32-NEXT: retl
;
; 64-LABEL: rotli64:
; 64: # %bb.0:
; 64-NEXT: rolq $5, %rdi
; 64-NEXT: movq %rdi, %rax
; 64-NEXT: retq
%B = shl i64 %A, 5
%C = lshr i64 %A, 59
%D = or i64 %B, %C
ret i64 %D
}
define i64 @rotri64(i64 %A) nounwind {
; 32-LABEL: rotri64:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %edx
; 32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; 32-NEXT: movl %ecx, %eax
; 32-NEXT: shldl $27, %edx, %eax
; 32-NEXT: shldl $27, %ecx, %edx
; 32-NEXT: retl
;
; 64-LABEL: rotri64:
; 64: # %bb.0:
; 64-NEXT: rolq $59, %rdi
; 64-NEXT: movq %rdi, %rax
; 64-NEXT: retq
%B = lshr i64 %A, 5
%C = shl i64 %A, 59
%D = or i64 %B, %C
ret i64 %D
}
define i64 @rotl1_64(i64 %A) nounwind {
; 32-LABEL: rotl1_64:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; 32-NEXT: movl %ecx, %edx
; 32-NEXT: shldl $1, %eax, %edx
; 32-NEXT: shldl $1, %ecx, %eax
; 32-NEXT: retl
;
; 64-LABEL: rotl1_64:
; 64: # %bb.0:
; 64-NEXT: rolq %rdi
; 64-NEXT: movq %rdi, %rax
; 64-NEXT: retq
%B = shl i64 %A, 1
%C = lshr i64 %A, 63
%D = or i64 %B, %C
ret i64 %D
}
define i64 @rotr1_64(i64 %A) nounwind {
; 32-LABEL: rotr1_64:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %edx
; 32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; 32-NEXT: movl %ecx, %eax
; 32-NEXT: shldl $31, %edx, %eax
; 32-NEXT: shldl $31, %ecx, %edx
; 32-NEXT: retl
;
; 64-LABEL: rotr1_64:
; 64: # %bb.0:
; 64-NEXT: rorq %rdi
; 64-NEXT: movq %rdi, %rax
; 64-NEXT: retq
%B = shl i64 %A, 63
%C = lshr i64 %A, 1
%D = or i64 %B, %C
ret i64 %D
}
define i32 @rotl32(i32 %A, i8 %Amt) nounwind {
; 32-LABEL: rotl32:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: roll %cl, %eax
; 32-NEXT: retl
;
; 64-LABEL: rotl32:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: roll %cl, %edi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%shift.upgrd.1 = zext i8 %Amt to i32
%B = shl i32 %A, %shift.upgrd.1
%Amt2 = sub i8 32, %Amt
%shift.upgrd.2 = zext i8 %Amt2 to i32
%C = lshr i32 %A, %shift.upgrd.2
%D = or i32 %B, %C
ret i32 %D
}
define i32 @rotr32(i32 %A, i8 %Amt) nounwind {
; 32-LABEL: rotr32:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorl %cl, %eax
; 32-NEXT: retl
;
; 64-LABEL: rotr32:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rorl %cl, %edi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%shift.upgrd.3 = zext i8 %Amt to i32
%B = lshr i32 %A, %shift.upgrd.3
%Amt2 = sub i8 32, %Amt
%shift.upgrd.4 = zext i8 %Amt2 to i32
%C = shl i32 %A, %shift.upgrd.4
%D = or i32 %B, %C
ret i32 %D
}
define i32 @rotli32(i32 %A) nounwind {
; 32-LABEL: rotli32:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: roll $5, %eax
; 32-NEXT: retl
;
; 64-LABEL: rotli32:
; 64: # %bb.0:
; 64-NEXT: roll $5, %edi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i32 %A, 5
%C = lshr i32 %A, 27
%D = or i32 %B, %C
ret i32 %D
}
define i32 @rotri32(i32 %A) nounwind {
; 32-LABEL: rotri32:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: roll $27, %eax
; 32-NEXT: retl
;
; 64-LABEL: rotri32:
; 64: # %bb.0:
; 64-NEXT: roll $27, %edi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = lshr i32 %A, 5
%C = shl i32 %A, 27
%D = or i32 %B, %C
ret i32 %D
}
define i32 @rotl1_32(i32 %A) nounwind {
; 32-LABEL: rotl1_32:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: roll %eax
; 32-NEXT: retl
;
; 64-LABEL: rotl1_32:
; 64: # %bb.0:
; 64-NEXT: roll %edi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i32 %A, 1
%C = lshr i32 %A, 31
%D = or i32 %B, %C
ret i32 %D
}
define i32 @rotr1_32(i32 %A) nounwind {
; 32-LABEL: rotr1_32:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorl %eax
; 32-NEXT: retl
;
; 64-LABEL: rotr1_32:
; 64: # %bb.0:
; 64-NEXT: rorl %edi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i32 %A, 31
%C = lshr i32 %A, 1
%D = or i32 %B, %C
ret i32 %D
}
define i16 @rotl16(i16 %A, i8 %Amt) nounwind {
; 32-LABEL: rotl16:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rolw %cl, %ax
; 32-NEXT: retl
;
; 64-LABEL: rotl16:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rolw %cl, %di
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%shift.upgrd.5 = zext i8 %Amt to i16
%B = shl i16 %A, %shift.upgrd.5
%Amt2 = sub i8 16, %Amt
%shift.upgrd.6 = zext i8 %Amt2 to i16
%C = lshr i16 %A, %shift.upgrd.6
%D = or i16 %B, %C
ret i16 %D
}
define i16 @rotr16(i16 %A, i8 %Amt) nounwind {
; 32-LABEL: rotr16:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorw %cl, %ax
; 32-NEXT: retl
;
; 64-LABEL: rotr16:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rorw %cl, %di
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%shift.upgrd.7 = zext i8 %Amt to i16
%B = lshr i16 %A, %shift.upgrd.7
%Amt2 = sub i8 16, %Amt
%shift.upgrd.8 = zext i8 %Amt2 to i16
%C = shl i16 %A, %shift.upgrd.8
%D = or i16 %B, %C
ret i16 %D
}
define i16 @rotli16(i16 %A) nounwind {
; 32-LABEL: rotli16:
; 32: # %bb.0:
; 32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rolw $5, %ax
; 32-NEXT: retl
;
; 64-LABEL: rotli16:
; 64: # %bb.0:
; 64-NEXT: rolw $5, %di
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i16 %A, 5
%C = lshr i16 %A, 11
%D = or i16 %B, %C
ret i16 %D
}
define i16 @rotri16(i16 %A) nounwind {
; 32-LABEL: rotri16:
; 32: # %bb.0:
; 32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rolw $11, %ax
; 32-NEXT: retl
;
; 64-LABEL: rotri16:
; 64: # %bb.0:
; 64-NEXT: rolw $11, %di
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = lshr i16 %A, 5
%C = shl i16 %A, 11
%D = or i16 %B, %C
ret i16 %D
}
define i16 @rotl1_16(i16 %A) nounwind {
; 32-LABEL: rotl1_16:
; 32: # %bb.0:
; 32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rolw %ax
; 32-NEXT: retl
;
; 64-LABEL: rotl1_16:
; 64: # %bb.0:
; 64-NEXT: rolw %di
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i16 %A, 1
%C = lshr i16 %A, 15
%D = or i16 %B, %C
ret i16 %D
}
define i16 @rotr1_16(i16 %A) nounwind {
; 32-LABEL: rotr1_16:
; 32: # %bb.0:
; 32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorw %ax
; 32-NEXT: retl
;
; 64-LABEL: rotr1_16:
; 64: # %bb.0:
; 64-NEXT: rorw %di
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = lshr i16 %A, 1
%C = shl i16 %A, 15
%D = or i16 %B, %C
ret i16 %D
}
define i8 @rotl8(i8 %A, i8 %Amt) nounwind {
; 32-LABEL: rotl8:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movb {{[0-9]+}}(%esp), %al
; 32-NEXT: rolb %cl, %al
; 32-NEXT: retl
;
; 64-LABEL: rotl8:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rolb %cl, %dil
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i8 %A, %Amt
%Amt2 = sub i8 8, %Amt
%C = lshr i8 %A, %Amt2
%D = or i8 %B, %C
ret i8 %D
}
define i8 @rotr8(i8 %A, i8 %Amt) nounwind {
; 32-LABEL: rotr8:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %cl
; 32-NEXT: movb {{[0-9]+}}(%esp), %al
; 32-NEXT: rorb %cl, %al
; 32-NEXT: retl
;
; 64-LABEL: rotr8:
; 64: # %bb.0:
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rorb %cl, %dil
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = lshr i8 %A, %Amt
%Amt2 = sub i8 8, %Amt
%C = shl i8 %A, %Amt2
%D = or i8 %B, %C
ret i8 %D
}
define i8 @rotli8(i8 %A) nounwind {
; 32-LABEL: rotli8:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %al
; 32-NEXT: rolb $5, %al
; 32-NEXT: retl
;
; 64-LABEL: rotli8:
; 64: # %bb.0:
; 64-NEXT: rolb $5, %dil
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i8 %A, 5
%C = lshr i8 %A, 3
%D = or i8 %B, %C
ret i8 %D
}
define i8 @rotri8(i8 %A) nounwind {
; 32-LABEL: rotri8:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %al
; 32-NEXT: rolb $3, %al
; 32-NEXT: retl
;
; 64-LABEL: rotri8:
; 64: # %bb.0:
; 64-NEXT: rolb $3, %dil
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = lshr i8 %A, 5
%C = shl i8 %A, 3
%D = or i8 %B, %C
ret i8 %D
}
define i8 @rotl1_8(i8 %A) nounwind {
; 32-LABEL: rotl1_8:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %al
; 32-NEXT: rolb %al
; 32-NEXT: retl
;
; 64-LABEL: rotl1_8:
; 64: # %bb.0:
; 64-NEXT: rolb %dil
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = shl i8 %A, 1
%C = lshr i8 %A, 7
%D = or i8 %B, %C
ret i8 %D
}
define i8 @rotr1_8(i8 %A) nounwind {
; 32-LABEL: rotr1_8:
; 32: # %bb.0:
; 32-NEXT: movb {{[0-9]+}}(%esp), %al
; 32-NEXT: rorb %al
; 32-NEXT: retl
;
; 64-LABEL: rotr1_8:
; 64: # %bb.0:
; 64-NEXT: rorb %dil
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
%B = lshr i8 %A, 1
%C = shl i8 %A, 7
%D = or i8 %B, %C
ret i8 %D
}
define void @rotr1_64_mem(i64* %Aptr) nounwind {
; 32-LABEL: rotr1_64_mem:
; 32: # %bb.0:
; 32-NEXT: pushl %esi
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: movl (%eax), %ecx
; 32-NEXT: movl 4(%eax), %edx
; 32-NEXT: movl %edx, %esi
; 32-NEXT: shldl $31, %ecx, %esi
; 32-NEXT: shldl $31, %edx, %ecx
; 32-NEXT: movl %ecx, 4(%eax)
; 32-NEXT: movl %esi, (%eax)
; 32-NEXT: popl %esi
; 32-NEXT: retl
;
; 64-LABEL: rotr1_64_mem:
; 64: # %bb.0:
; 64-NEXT: rorq (%rdi)
; 64-NEXT: retq
%A = load i64, i64 *%Aptr
%B = shl i64 %A, 63
%C = lshr i64 %A, 1
%D = or i64 %B, %C
store i64 %D, i64* %Aptr
ret void
}
define void @rotr1_32_mem(i32* %Aptr) nounwind {
; 32-LABEL: rotr1_32_mem:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorl (%eax)
; 32-NEXT: retl
;
; 64-LABEL: rotr1_32_mem:
; 64: # %bb.0:
; 64-NEXT: rorl (%rdi)
; 64-NEXT: retq
%A = load i32, i32 *%Aptr
%B = shl i32 %A, 31
%C = lshr i32 %A, 1
%D = or i32 %B, %C
store i32 %D, i32* %Aptr
ret void
}
define void @rotr1_16_mem(i16* %Aptr) nounwind {
; 32-LABEL: rotr1_16_mem:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorw (%eax)
; 32-NEXT: retl
;
; 64-LABEL: rotr1_16_mem:
; 64: # %bb.0:
; 64-NEXT: rorw (%rdi)
; 64-NEXT: retq
%A = load i16, i16 *%Aptr
%B = shl i16 %A, 15
%C = lshr i16 %A, 1
%D = or i16 %B, %C
store i16 %D, i16* %Aptr
ret void
}
define void @rotr1_8_mem(i8* %Aptr) nounwind {
; 32-LABEL: rotr1_8_mem:
; 32: # %bb.0:
; 32-NEXT: movl {{[0-9]+}}(%esp), %eax
; 32-NEXT: rorb (%eax)
; 32-NEXT: retl
;
; 64-LABEL: rotr1_8_mem:
; 64: # %bb.0:
; 64-NEXT: rorb (%rdi)
; 64-NEXT: retq
%A = load i8, i8 *%Aptr
%B = shl i8 %A, 7
%C = lshr i8 %A, 1
%D = or i8 %B, %C
store i8 %D, i8* %Aptr
ret void
}
define i64 @truncated_rot(i64 %x, i32 %amt) nounwind {
; 32-LABEL: truncated_rot:
; 32: # %bb.0: # %entry
; 32-NEXT: pushl %ebx
; 32-NEXT: pushl %edi
; 32-NEXT: pushl %esi
; 32-NEXT: movl {{[0-9]+}}(%esp), %esi
; 32-NEXT: movl {{[0-9]+}}(%esp), %edi
; 32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; 32-NEXT: movl %esi, %eax
; 32-NEXT: shll %cl, %eax
; 32-NEXT: testb $32, %cl
; 32-NEXT: movl $0, %ebx
; 32-NEXT: jne .LBB28_2
; 32-NEXT: # %bb.1: # %entry
; 32-NEXT: movl %eax, %ebx
; 32-NEXT: .LBB28_2: # %entry
; 32-NEXT: movl $64, %edx
; 32-NEXT: subl %ecx, %edx
; 32-NEXT: movl %edi, %eax
; 32-NEXT: movl %edx, %ecx
; 32-NEXT: shrl %cl, %eax
; 32-NEXT: shrdl %cl, %edi, %esi
; 32-NEXT: testb $32, %dl
; 32-NEXT: jne .LBB28_4
; 32-NEXT: # %bb.3: # %entry
; 32-NEXT: movl %esi, %eax
; 32-NEXT: .LBB28_4: # %entry
; 32-NEXT: orl %ebx, %eax
; 32-NEXT: xorl %edx, %edx
; 32-NEXT: popl %esi
; 32-NEXT: popl %edi
; 32-NEXT: popl %ebx
; 32-NEXT: retl
;
; 64-LABEL: truncated_rot:
; 64: # %bb.0: # %entry
; 64-NEXT: movl %esi, %ecx
; 64-NEXT: rolq %cl, %rdi
; 64-NEXT: movl %edi, %eax
; 64-NEXT: retq
entry:
%sh_prom = zext i32 %amt to i64
%shl = shl i64 %x, %sh_prom
%sub = sub nsw i32 64, %amt
%sh_prom1 = zext i32 %sub to i64
%shr = lshr i64 %x, %sh_prom1
%or = or i64 %shr, %shl
%and = and i64 %or, 4294967295
ret i64 %and
}