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llvm-mirror/test/CodeGen/X86/add.ll
Amaury Sechet de0f23bb11 [DAGCombiner] fold (add (add (xor a, -1), b), 1) -> (sub b, a) 
Summary: This pattern is sometime created after legalization.

Reviewers: efriedma, spatel, RKSimon, zvi, bkramer

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58874

llvm-svn: 355716
2019-03-08 19:39:32 +00:00

657 lines
18 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mcpu=generic -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X32
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux | FileCheck %s --check-prefixes=X64,X64-LINUX
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-win32 | FileCheck %s --check-prefixes=X64,X64-WIN32
declare {i32, i1} @llvm.sadd.with.overflow.i32(i32, i32)
declare {i32, i1} @llvm.uadd.with.overflow.i32(i32, i32)
; The immediate can be encoded in a smaller way if the
; instruction is a sub instead of an add.
define i32 @test1(i32 inreg %a) nounwind {
; X32-LABEL: test1:
; X32: # %bb.0: # %entry
; X32-NEXT: subl $-128, %eax
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test1:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: movl %edi, %eax
; X64-LINUX-NEXT: subl $-128, %eax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test1:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: movl %ecx, %eax
; X64-WIN32-NEXT: subl $-128, %eax
; X64-WIN32-NEXT: retq
entry:
%b = add i32 %a, 128
ret i32 %b
}
define i64 @test2(i64 inreg %a) nounwind {
; X32-LABEL: test2:
; X32: # %bb.0: # %entry
; X32-NEXT: addl $-2147483648, %eax # imm = 0x80000000
; X32-NEXT: adcl $0, %edx
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test2:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: movq %rdi, %rax
; X64-LINUX-NEXT: subq $-2147483648, %rax # imm = 0x80000000
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test2:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: movq %rcx, %rax
; X64-WIN32-NEXT: subq $-2147483648, %rax # imm = 0x80000000
; X64-WIN32-NEXT: retq
entry:
%b = add i64 %a, 2147483648
ret i64 %b
}
define i64 @test3(i64 inreg %a) nounwind {
; X32-LABEL: test3:
; X32: # %bb.0: # %entry
; X32-NEXT: addl $128, %eax
; X32-NEXT: adcl $0, %edx
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test3:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: movq %rdi, %rax
; X64-LINUX-NEXT: subq $-128, %rax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test3:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: movq %rcx, %rax
; X64-WIN32-NEXT: subq $-128, %rax
; X64-WIN32-NEXT: retq
entry:
%b = add i64 %a, 128
ret i64 %b
}
define i1 @test4(i32 %v1, i32 %v2, i32* %X) nounwind {
; X32-LABEL: test4:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: jo .LBB3_2
; X32-NEXT: # %bb.1: # %normal
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: movl $0, (%eax)
; X32-NEXT: .LBB3_2: # %overflow
; X32-NEXT: xorl %eax, %eax
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test4:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: addl %esi, %edi
; X64-LINUX-NEXT: jo .LBB3_2
; X64-LINUX-NEXT: # %bb.1: # %normal
; X64-LINUX-NEXT: movl $0, (%rdx)
; X64-LINUX-NEXT: .LBB3_2: # %overflow
; X64-LINUX-NEXT: xorl %eax, %eax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test4:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: addl %edx, %ecx
; X64-WIN32-NEXT: jo .LBB3_2
; X64-WIN32-NEXT: # %bb.1: # %normal
; X64-WIN32-NEXT: movl $0, (%r8)
; X64-WIN32-NEXT: .LBB3_2: # %overflow
; X64-WIN32-NEXT: xorl %eax, %eax
; X64-WIN32-NEXT: retq
entry:
%t = call {i32, i1} @llvm.sadd.with.overflow.i32(i32 %v1, i32 %v2)
%sum = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
br i1 %obit, label %overflow, label %normal
normal:
store i32 0, i32* %X
br label %overflow
overflow:
ret i1 false
}
define i1 @test5(i32 %v1, i32 %v2, i32* %X) nounwind {
; X32-LABEL: test5:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: jb .LBB4_2
; X32-NEXT: # %bb.1: # %normal
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: movl $0, (%eax)
; X32-NEXT: .LBB4_2: # %carry
; X32-NEXT: xorl %eax, %eax
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test5:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: addl %esi, %edi
; X64-LINUX-NEXT: jb .LBB4_2
; X64-LINUX-NEXT: # %bb.1: # %normal
; X64-LINUX-NEXT: movl $0, (%rdx)
; X64-LINUX-NEXT: .LBB4_2: # %carry
; X64-LINUX-NEXT: xorl %eax, %eax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test5:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: addl %edx, %ecx
; X64-WIN32-NEXT: jb .LBB4_2
; X64-WIN32-NEXT: # %bb.1: # %normal
; X64-WIN32-NEXT: movl $0, (%r8)
; X64-WIN32-NEXT: .LBB4_2: # %carry
; X64-WIN32-NEXT: xorl %eax, %eax
; X64-WIN32-NEXT: retq
entry:
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %v1, i32 %v2)
%sum = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
br i1 %obit, label %carry, label %normal
normal:
store i32 0, i32* %X
br label %carry
carry:
ret i1 false
}
define i64 @test6(i64 %A, i32 %B) nounwind {
; X32-LABEL: test6:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: movl {{[0-9]+}}(%esp), %edx
; X32-NEXT: addl {{[0-9]+}}(%esp), %edx
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test6:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: # kill: def $esi killed $esi def $rsi
; X64-LINUX-NEXT: shlq $32, %rsi
; X64-LINUX-NEXT: leaq (%rsi,%rdi), %rax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test6:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: # kill: def $edx killed $edx def $rdx
; X64-WIN32-NEXT: shlq $32, %rdx
; X64-WIN32-NEXT: leaq (%rdx,%rcx), %rax
; X64-WIN32-NEXT: retq
entry:
%tmp12 = zext i32 %B to i64
%tmp3 = shl i64 %tmp12, 32
%tmp5 = add i64 %tmp3, %A
ret i64 %tmp5
}
define {i32, i1} @test7(i32 %v1, i32 %v2) nounwind {
; X32-LABEL: test7:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: setb %dl
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test7:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: movl %edi, %eax
; X64-LINUX-NEXT: addl %esi, %eax
; X64-LINUX-NEXT: setb %dl
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test7:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: movl %ecx, %eax
; X64-WIN32-NEXT: addl %edx, %eax
; X64-WIN32-NEXT: setb %dl
; X64-WIN32-NEXT: retq
entry:
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %v1, i32 %v2)
ret {i32, i1} %t
}
; PR5443
define {i64, i1} @test8(i64 %left, i64 %right) nounwind {
; X32-LABEL: test8:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: movl {{[0-9]+}}(%esp), %edx
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: adcl {{[0-9]+}}(%esp), %edx
; X32-NEXT: setb %cl
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test8:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: movq %rdi, %rax
; X64-LINUX-NEXT: addq %rsi, %rax
; X64-LINUX-NEXT: setb %dl
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test8:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: movq %rcx, %rax
; X64-WIN32-NEXT: addq %rdx, %rax
; X64-WIN32-NEXT: setb %dl
; X64-WIN32-NEXT: retq
entry:
%extleft = zext i64 %left to i65
%extright = zext i64 %right to i65
%sum = add i65 %extleft, %extright
%res.0 = trunc i65 %sum to i64
%overflow = and i65 %sum, -18446744073709551616
%res.1 = icmp ne i65 %overflow, 0
%final0 = insertvalue {i64, i1} undef, i64 %res.0, 0
%final1 = insertvalue {i64, i1} %final0, i1 %res.1, 1
ret {i64, i1} %final1
}
define i32 @test9(i32 %x, i32 %y) nounwind readnone {
; X32-LABEL: test9:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: xorl %ecx, %ecx
; X32-NEXT: cmpl $10, {{[0-9]+}}(%esp)
; X32-NEXT: sete %cl
; X32-NEXT: subl %ecx, %eax
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test9:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: movl %esi, %eax
; X64-LINUX-NEXT: xorl %ecx, %ecx
; X64-LINUX-NEXT: cmpl $10, %edi
; X64-LINUX-NEXT: sete %cl
; X64-LINUX-NEXT: subl %ecx, %eax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test9:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: movl %edx, %eax
; X64-WIN32-NEXT: xorl %edx, %edx
; X64-WIN32-NEXT: cmpl $10, %ecx
; X64-WIN32-NEXT: sete %dl
; X64-WIN32-NEXT: subl %edx, %eax
; X64-WIN32-NEXT: retq
entry:
%cmp = icmp eq i32 %x, 10
%sub = sext i1 %cmp to i32
%cond = add i32 %sub, %y
ret i32 %cond
}
define i1 @test10(i32 %x) nounwind {
; X32-LABEL: test10:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: incl %eax
; X32-NEXT: seto %al
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test10:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: incl %edi
; X64-LINUX-NEXT: seto %al
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test10:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: incl %ecx
; X64-WIN32-NEXT: seto %al
; X64-WIN32-NEXT: retq
entry:
%t = call {i32, i1} @llvm.sadd.with.overflow.i32(i32 %x, i32 1)
%obit = extractvalue {i32, i1} %t, 1
ret i1 %obit
}
define void @test11(i32* inreg %a) nounwind {
; X32-LABEL: test11:
; X32: # %bb.0: # %entry
; X32-NEXT: subl $-128, (%eax)
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test11:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: subl $-128, (%rdi)
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test11:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: subl $-128, (%rcx)
; X64-WIN32-NEXT: retq
entry:
%aa = load i32, i32* %a
%b = add i32 %aa, 128
store i32 %b, i32* %a
ret void
}
define void @test12(i64* inreg %a) nounwind {
; X32-LABEL: test12:
; X32: # %bb.0: # %entry
; X32-NEXT: addl $-2147483648, (%eax) # imm = 0x80000000
; X32-NEXT: adcl $0, 4(%eax)
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test12:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: subq $-2147483648, (%rdi) # imm = 0x80000000
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test12:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: subq $-2147483648, (%rcx) # imm = 0x80000000
; X64-WIN32-NEXT: retq
entry:
%aa = load i64, i64* %a
%b = add i64 %aa, 2147483648
store i64 %b, i64* %a
ret void
}
define void @test13(i64* inreg %a) nounwind {
; X32-LABEL: test13:
; X32: # %bb.0: # %entry
; X32-NEXT: addl $128, (%eax)
; X32-NEXT: adcl $0, 4(%eax)
; X32-NEXT: retl
;
; X64-LINUX-LABEL: test13:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: subq $-128, (%rdi)
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: test13:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: subq $-128, (%rcx)
; X64-WIN32-NEXT: retq
entry:
%aa = load i64, i64* %a
%b = add i64 %aa, 128
store i64 %b, i64* %a
ret void
}
define i32 @inc_not(i32 %a) {
; X32-LABEL: inc_not:
; X32: # %bb.0:
; X32-NEXT: xorl %eax, %eax
; X32-NEXT: subl {{[0-9]+}}(%esp), %eax
; X32-NEXT: retl
;
; X64-LINUX-LABEL: inc_not:
; X64-LINUX: # %bb.0:
; X64-LINUX-NEXT: movl %edi, %eax
; X64-LINUX-NEXT: negl %eax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: inc_not:
; X64-WIN32: # %bb.0:
; X64-WIN32-NEXT: movl %ecx, %eax
; X64-WIN32-NEXT: negl %eax
; X64-WIN32-NEXT: retq
%nota = xor i32 %a, -1
%r = add i32 %nota, 1
ret i32 %r
}
define <4 x i32> @inc_not_vec(<4 x i32> %a) nounwind {
; X32-LABEL: inc_not_vec:
; X32: # %bb.0:
; X32-NEXT: pushl %edi
; X32-NEXT: pushl %esi
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: xorl %ecx, %ecx
; X32-NEXT: xorl %edx, %edx
; X32-NEXT: subl {{[0-9]+}}(%esp), %edx
; X32-NEXT: xorl %esi, %esi
; X32-NEXT: subl {{[0-9]+}}(%esp), %esi
; X32-NEXT: xorl %edi, %edi
; X32-NEXT: subl {{[0-9]+}}(%esp), %edi
; X32-NEXT: subl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movl %ecx, 12(%eax)
; X32-NEXT: movl %edi, 8(%eax)
; X32-NEXT: movl %esi, 4(%eax)
; X32-NEXT: movl %edx, (%eax)
; X32-NEXT: popl %esi
; X32-NEXT: popl %edi
; X32-NEXT: retl $4
;
; X64-LINUX-LABEL: inc_not_vec:
; X64-LINUX: # %bb.0:
; X64-LINUX-NEXT: pxor %xmm1, %xmm1
; X64-LINUX-NEXT: psubd %xmm0, %xmm1
; X64-LINUX-NEXT: movdqa %xmm1, %xmm0
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: inc_not_vec:
; X64-WIN32: # %bb.0:
; X64-WIN32-NEXT: pxor %xmm0, %xmm0
; X64-WIN32-NEXT: psubd (%rcx), %xmm0
; X64-WIN32-NEXT: retq
%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 -1, i32 -1>
%r = add <4 x i32> %nota, <i32 1, i32 1, i32 1, i32 1>
ret <4 x i32> %r
}
define void @uaddo1_not(i32 %a, i32* %p0, i1* %p1) {
; X32-LABEL: uaddo1_not:
; X32: # %bb.0:
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: xorl %edx, %edx
; X32-NEXT: subl {{[0-9]+}}(%esp), %edx
; X32-NEXT: movl %edx, (%ecx)
; X32-NEXT: setae (%eax)
; X32-NEXT: retl
;
; X64-LINUX-LABEL: uaddo1_not:
; X64-LINUX: # %bb.0:
; X64-LINUX-NEXT: negl %edi
; X64-LINUX-NEXT: movl %edi, (%rsi)
; X64-LINUX-NEXT: setae (%rdx)
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: uaddo1_not:
; X64-WIN32: # %bb.0:
; X64-WIN32-NEXT: negl %ecx
; X64-WIN32-NEXT: movl %ecx, (%rdx)
; X64-WIN32-NEXT: setae (%r8)
; X64-WIN32-NEXT: retq
%nota = xor i32 %a, -1
%uaddo = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %nota, i32 1)
%r0 = extractvalue {i32, i1} %uaddo, 0
%r1 = extractvalue {i32, i1} %uaddo, 1
store i32 %r0, i32* %p0
store i1 %r1, i1* %p1
ret void
}
define i32 @add_to_sub(i32 %a, i32 %b) {
; X32-LABEL: add_to_sub:
; X32: # %bb.0:
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: subl {{[0-9]+}}(%esp), %eax
; X32-NEXT: retl
;
; X64-LINUX-LABEL: add_to_sub:
; X64-LINUX: # %bb.0:
; X64-LINUX-NEXT: movl %esi, %eax
; X64-LINUX-NEXT: subl %edi, %eax
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: add_to_sub:
; X64-WIN32: # %bb.0:
; X64-WIN32-NEXT: movl %edx, %eax
; X64-WIN32-NEXT: subl %ecx, %eax
; X64-WIN32-NEXT: retq
%nota = xor i32 %a, -1
%add = add i32 %nota, %b
%r = add i32 %add, 1
ret i32 %r
}
declare void @bar_i32(i32)
declare void @bar_i64(i64)
; Make sure we can use sub -128 for add 128 when the flags are used.
define void @add_i32_128_flag(i32 %x) {
; X32-LABEL: add_i32_128_flag:
; X32: # %bb.0: # %entry
; X32-NEXT: movl $128, %eax
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: je .LBB17_2
; X32-NEXT: # %bb.1: # %if.then
; X32-NEXT: pushl %eax
; X32-NEXT: .cfi_adjust_cfa_offset 4
; X32-NEXT: calll bar_i32
; X32-NEXT: addl $4, %esp
; X32-NEXT: .cfi_adjust_cfa_offset -4
; X32-NEXT: .LBB17_2: # %if.end
; X32-NEXT: retl
;
; X64-LINUX-LABEL: add_i32_128_flag:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: subl $-128, %edi
; X64-LINUX-NEXT: je .LBB17_1
; X64-LINUX-NEXT: # %bb.2: # %if.then
; X64-LINUX-NEXT: jmp bar_i32 # TAILCALL
; X64-LINUX-NEXT: .LBB17_1: # %if.end
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: add_i32_128_flag:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: subl $-128, %ecx
; X64-WIN32-NEXT: je .LBB17_1
; X64-WIN32-NEXT: # %bb.2: # %if.then
; X64-WIN32-NEXT: jmp bar_i32 # TAILCALL
; X64-WIN32-NEXT: .LBB17_1: # %if.end
; X64-WIN32-NEXT: retq
entry:
%add = add i32 %x, 128
%tobool = icmp eq i32 %add, 0
br i1 %tobool, label %if.end, label %if.then
if.then:
tail call void @bar_i32(i32 %add)
br label %if.end
if.end:
ret void
}
; Make sure we can use sub -128 for add 128 when the flags are used.
define void @add_i64_128_flag(i64 %x) {
; X32-LABEL: add_i64_128_flag:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movl $128, %eax
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: adcl $0, %ecx
; X32-NEXT: movl %eax, %edx
; X32-NEXT: orl %ecx, %edx
; X32-NEXT: je .LBB18_2
; X32-NEXT: # %bb.1: # %if.then
; X32-NEXT: pushl %ecx
; X32-NEXT: .cfi_adjust_cfa_offset 4
; X32-NEXT: pushl %eax
; X32-NEXT: .cfi_adjust_cfa_offset 4
; X32-NEXT: calll bar_i64
; X32-NEXT: addl $8, %esp
; X32-NEXT: .cfi_adjust_cfa_offset -8
; X32-NEXT: .LBB18_2: # %if.end
; X32-NEXT: retl
;
; X64-LINUX-LABEL: add_i64_128_flag:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: subq $-128, %rdi
; X64-LINUX-NEXT: je .LBB18_1
; X64-LINUX-NEXT: # %bb.2: # %if.then
; X64-LINUX-NEXT: jmp bar_i64 # TAILCALL
; X64-LINUX-NEXT: .LBB18_1: # %if.end
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: add_i64_128_flag:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: subq $-128, %rcx
; X64-WIN32-NEXT: je .LBB18_1
; X64-WIN32-NEXT: # %bb.2: # %if.then
; X64-WIN32-NEXT: jmp bar_i64 # TAILCALL
; X64-WIN32-NEXT: .LBB18_1: # %if.end
; X64-WIN32-NEXT: retq
entry:
%add = add i64 %x, 128
%tobool = icmp eq i64 %add, 0
br i1 %tobool, label %if.end, label %if.then
if.then:
tail call void @bar_i64(i64 %add)
br label %if.end
if.end:
ret void
}
; Make sure we can use sub -2147483648 for add 2147483648 when the flags are used.
define void @add_i64_2147483648_flag(i64 %x) {
; X32-LABEL: add_i64_2147483648_flag:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movl $-2147483648, %eax # imm = 0x80000000
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: adcl $0, %ecx
; X32-NEXT: movl %eax, %edx
; X32-NEXT: orl %ecx, %edx
; X32-NEXT: je .LBB19_2
; X32-NEXT: # %bb.1: # %if.then
; X32-NEXT: pushl %ecx
; X32-NEXT: .cfi_adjust_cfa_offset 4
; X32-NEXT: pushl %eax
; X32-NEXT: .cfi_adjust_cfa_offset 4
; X32-NEXT: calll bar_i64
; X32-NEXT: addl $8, %esp
; X32-NEXT: .cfi_adjust_cfa_offset -8
; X32-NEXT: .LBB19_2: # %if.end
; X32-NEXT: retl
;
; X64-LINUX-LABEL: add_i64_2147483648_flag:
; X64-LINUX: # %bb.0: # %entry
; X64-LINUX-NEXT: subq $-2147483648, %rdi # imm = 0x80000000
; X64-LINUX-NEXT: je .LBB19_1
; X64-LINUX-NEXT: # %bb.2: # %if.then
; X64-LINUX-NEXT: jmp bar_i64 # TAILCALL
; X64-LINUX-NEXT: .LBB19_1: # %if.end
; X64-LINUX-NEXT: retq
;
; X64-WIN32-LABEL: add_i64_2147483648_flag:
; X64-WIN32: # %bb.0: # %entry
; X64-WIN32-NEXT: subq $-2147483648, %rcx # imm = 0x80000000
; X64-WIN32-NEXT: je .LBB19_1
; X64-WIN32-NEXT: # %bb.2: # %if.then
; X64-WIN32-NEXT: jmp bar_i64 # TAILCALL
; X64-WIN32-NEXT: .LBB19_1: # %if.end
; X64-WIN32-NEXT: retq
entry:
%add = add i64 %x, 2147483648
%tobool = icmp eq i64 %add, 0
br i1 %tobool, label %if.end, label %if.then
if.then:
tail call void @bar_i64(i64 %add)
br label %if.end
if.end:
ret void
}
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