test/CodeGen/X86/imul.ll

; RUN: llc < %s -mtriple=x86_64-pc-linux-gnu | FileCheck %s --check-prefix=X64
; RUN: llc < %s -mtriple=x86_64-pc-linux-gnux32 | FileCheck %s --check-prefix=X64
; RUN: llc < %s -mtriple=i686-pc-linux | FileCheck %s --check-prefix=X86

define i32 @mul4_32(i32 %A) {
; X64-LABEL: mul4_32:
; X64: leal
; X86-LABEL: mul4_32:
; X86: shll
    %mul = mul i32 %A, 4
    ret i32 %mul
}

define i64 @mul4_64(i64 %A) {
; X64-LABEL: mul4_64:
; X64: leaq
; X86-LABEL: mul4_64:
; X86: shldl
; X86: shll
    %mul = mul i64 %A, 4
    ret i64 %mul
}

define i32 @mul4096_32(i32 %A) {
; X64-LABEL: mul4096_32:
; X64: shll
; X86-LABEL: mul4096_32:
; X86: shll
    %mul = mul i32 %A, 4096
    ret i32 %mul
}

define i64 @mul4096_64(i64 %A) {
; X64-LABEL: mul4096_64:
; X64: shlq
; X86-LABEL: mul4096_64:
; X86: shldl
; X86: shll
    %mul = mul i64 %A, 4096
    ret i64 %mul
}

define i32 @mulmin4096_32(i32 %A) {
; X64-LABEL: mulmin4096_32:
; X64: shll
; X64-NEXT: negl
; X86-LABEL: mulmin4096_32:
; X86: shll
; X86-NEXT: negl
    %mul = mul i32 %A, -4096
    ret i32 %mul
}

define i64 @mulmin4096_64(i64 %A) {
; X64-LABEL: mulmin4096_64:
; X64: shlq
; X64-NEXT: negq
; X86-LABEL: mulmin4096_64:
; X86: shldl
; X86-NEXT: shll
; X86-NEXT: xorl
; X86-NEXT: negl
; X86-NEXT: sbbl
    %mul = mul i64 %A, -4096
    ret i64 %mul
}

define i32 @mul3_32(i32 %A) {
; X64-LABEL: mul3_32:
; X64: leal
; X86-LABEL: mul3_32:
; But why?!
; X86: imull
    %mul = mul i32 %A, 3
    ret i32 %mul
}

define i64 @mul3_64(i64 %A) {
; X64-LABEL: mul3_64:
; X64: leaq
; X86-LABEL: mul3_64:
; X86: mull
; X86-NEXT: imull
    %mul = mul i64 %A, 3
    ret i64 %mul
}

define i32 @mul40_32(i32 %A) {
; X64-LABEL: mul40_32:
; X64: shll
; X64-NEXT: leal
; X86-LABEL: mul40_32:
; X86: shll
; X86-NEXT: leal
    %mul = mul i32 %A, 40
    ret i32 %mul
}

define i64 @mul40_64(i64 %A) {
; X64-LABEL: mul40_64:
; X64: shlq
; X64-NEXT: leaq
; X86-LABEL: mul40_64:
; X86: leal
; X86-NEXT: movl
; X86-NEXT: mull
; X86-NEXT: leal
    %mul = mul i64 %A, 40
    ret i64 %mul
}

define i32 @mul4_32_minsize(i32 %A) minsize {
; X64-LABEL: mul4_32_minsize:
; X64: leal
; X86-LABEL: mul4_32_minsize:
; X86: shll
    %mul = mul i32 %A, 4
    ret i32 %mul
}

define i32 @mul40_32_minsize(i32 %A) minsize {
; X64-LABEL: mul40_32_minsize:
; X64: imull
; X86-LABEL: mul40_32_minsize:
; X86: imull
    %mul = mul i32 %A, 40
    ret i32 %mul
}

define i32 @mul33_32(i32 %A) {
; X64-LABEL: mul33_32:
; X64: shll
; X64-NEXT: leal
; X86-LABEL: mul33_32:
; X86: shll
; X86-NEXT: addl
    %mul = mul i32 %A, 33
    ret i32 %mul
}

define i32 @mul31_32(i32 %A) {
; X64-LABEL: mul31_32:
; X64: shll
; X64-NEXT: subl
; X86-LABEL: mul31_32:
; X86: shll
; X86-NEXT: subl
    %mul = mul i32 %A, 31
    ret i32 %mul
}

define i32 @mul0_32(i32 %A) {
; X64-LABEL: mul0_32:
; X64: xorl	%eax, %eax
    %mul = mul i32 %A, 0
    ret i32 %mul
}

define i32 @mul4294967295_32(i32 %A) {
; X64-LABEL: mul4294967295_32:
; X64: negl	%edi
; X64-NEXT:	movl	%edi, %eax
    %mul = mul i32 %A, 4294967295
    ret i32 %mul
}

define i64 @mul18446744073709551615_64(i64 %A) {
; X64-LABEL: mul18446744073709551615_64:
; X64: negq	%rdi
; X64-NEXT:	movq	%rdi, %rax
    %mul = mul i64 %A, 18446744073709551615
    ret i64 %mul
}

define i32 @test(i32 %a) {
; X64-LABEL: test:
; X64:       # BB#0: # %entry
; X64-NEXT:    movl %edi, %eax
; X64-NEXT:    shll $5, %eax
; X64-NEXT:    subl %edi, %eax
; X64-NEXT:    retq
;
; X86-LABEL: test:
; X86:       # BB#0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    shll $5, %eax
; X86-NEXT:    subl %ecx, %eax
; X86-NEXT:    retl
entry:
	%tmp3 = mul i32 %a, 31
	ret i32 %tmp3
}

define i32 @test1(i32 %a) {
; X64-LABEL: test1:
; X64:       # BB#0: # %entry
; X64-NEXT:    movl %edi, %eax
; X64-NEXT:    shll $5, %eax
; X64-NEXT:    subl %edi, %eax
; X64-NEXT:    negl %eax
; X64-NEXT:    retq
;
; X86-LABEL: test1:
; X86:       # BB#0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    shll $5, %eax
; X86-NEXT:    subl %ecx, %eax
; X86-NEXT:    negl %eax
; X86-NEXT:    retl
entry:
	%tmp3 = mul i32 %a, -31
	ret i32 %tmp3
}


define i32 @test2(i32 %a) {
; X64-LABEL: test2:
; X64:       # BB#0: # %entry
; X64-NEXT:    # kill: %EDI<def> %EDI<kill> %RDI<def>
; X64-NEXT:    movl %edi, %eax
; X64-NEXT:    shll $5, %eax
; X64-NEXT:    leal (%rax,%rdi), %eax
; X64-NEXT:    retq
;
; X86-LABEL: test2:
; X86:       # BB#0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    shll $5, %eax
; X86-NEXT:    addl %ecx, %eax
; X86-NEXT:    retl
entry:
	%tmp3 = mul i32 %a, 33
	ret i32 %tmp3
}

define i32 @test3(i32 %a) {
; X64-LABEL: test3:
; X64:       # BB#0: # %entry
; X64-NEXT:    # kill: %EDI<def> %EDI<kill> %RDI<def>
; X64-NEXT:    movl %edi, %eax
; X64-NEXT:    shll $5, %eax
; X64-NEXT:    leal (%rax,%rdi), %eax
; X64-NEXT:    negl %eax
; X64-NEXT:    retq
;
; X86-LABEL: test3:
; X86:       # BB#0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    shll $5, %eax
; X86-NEXT:    addl %ecx, %eax
; X86-NEXT:    negl %eax
; X86-NEXT:    retl
entry:
	%tmp3 = mul i32 %a, -33
	ret i32 %tmp3
}

define i64 @test4(i64 %a) {
; X64-LABEL: test4:
; X64:       # BB#0: # %entry
; X64-NEXT:    movq %rdi, %rax
; X64-NEXT:    shlq $5, %rax
; X64-NEXT:    subq %rdi, %rax
; X64-NEXT:    retq
;
; X86-LABEL: test4:
; X86:       # BB#0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl %eax, %ecx
; X86-NEXT:    shll $5, %ecx
; X86-NEXT:    subl %eax, %ecx
; X86-NEXT:    movl $31, %eax
; X86-NEXT:    mull {{[0-9]+}}(%esp)
; X86-NEXT:    addl %ecx, %edx
; X86-NEXT:    retl
entry:
	%tmp3 = mul i64 %a, 31
	ret i64 %tmp3
}

define i64 @test5(i64 %a) {
; X64-LABEL: test5:
; X64:       # BB#0: # %entry
; X64-NEXT:    movq %rdi, %rax
; X64-NEXT:    shlq $5, %rax
; X64-NEXT:    subq %rdi, %rax
; X64-NEXT:    negq %rax
; X64-NEXT:    retq
;
; X86-LABEL: test5:
; X86:       # BB#0: # %entry
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    .cfi_offset %esi, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl %eax, %esi
; X86-NEXT:    shll $5, %esi
; X86-NEXT:    subl %eax, %esi
; X86-NEXT:    movl $-31, %edx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    mull %edx
; X86-NEXT:    subl %ecx, %edx
; X86-NEXT:    subl %esi, %edx
; X86-NEXT:    popl %esi
; X86-NEXT:    retl
entry:
	%tmp3 = mul i64 %a, -31
	ret i64 %tmp3
}


define i64 @test6(i64 %a) {
; X64-LABEL: test6:
; X64:       # BB#0: # %entry
; X64-NEXT:    movq %rdi, %rax
; X64-NEXT:    shlq $5, %rax
; X64-NEXT:    leaq (%rax,%rdi), %rax
; X64-NEXT:    retq
;
; X86-LABEL: test6:
; X86:       # BB#0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl %eax, %ecx
; X86-NEXT:    shll $5, %ecx
; X86-NEXT:    addl %eax, %ecx
; X86-NEXT:    movl $33, %eax
; X86-NEXT:    mull {{[0-9]+}}(%esp)
; X86-NEXT:    addl %ecx, %edx
; X86-NEXT:    retl
entry:
	%tmp3 = mul i64 %a, 33
	ret i64 %tmp3
}

define i64 @test7(i64 %a) {
; X64-LABEL: test7:
; X64:       # BB#0: # %entry
; X64-NEXT:    movq %rdi, %rax
; X64-NEXT:    shlq $5, %rax
; X64-NEXT:    leaq (%rax,%rdi), %rax
; X64-NEXT:    negq %rax
; X64-NEXT:    retq
;
; X86-LABEL: test7:
; X86:       # BB#0: # %entry
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    .cfi_offset %esi, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl %eax, %esi
; X86-NEXT:    shll $5, %esi
; X86-NEXT:    addl %eax, %esi
; X86-NEXT:    movl $-33, %edx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    mull %edx
; X86-NEXT:    subl %ecx, %edx
; X86-NEXT:    subl %esi, %edx
; X86-NEXT:    popl %esi
; X86-NEXT:    retl
entry:
	%tmp3 = mul i64 %a, -33
	ret i64 %tmp3
}

define i64 @testOverflow(i64 %a) {
; X64-LABEL: testOverflow:
; X64:       # BB#0: # %entry
; X64-NEXT:    movabsq $9223372036854775807, %rax # imm = 0x7FFFFFFFFFFFFFFF
; X64-NEXT:    imulq %rdi, %rax
; X64-NEXT:    retq
;
; X86-LABEL: testOverflow:
; X86:       # BB#0: # %entry
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    .cfi_offset %esi, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl $-1, %edx
; X86-NEXT:    movl %ecx, %eax
; X86-NEXT:    mull %edx
; X86-NEXT:    movl %ecx, %esi
; X86-NEXT:    shll $31, %esi
; X86-NEXT:    subl %ecx, %esi
; X86-NEXT:    addl %esi, %edx
; X86-NEXT:    subl {{[0-9]+}}(%esp), %edx
; X86-NEXT:    popl %esi
; X86-NEXT:    retl
entry:
	%tmp3 = mul i64 %a, 9223372036854775807
	ret i64 %tmp3
}