forked from OSchip/llvm-project
151 lines
3.5 KiB
LLVM
151 lines
3.5 KiB
LLVM
; RUN: llc < %s -mcpu=generic -march=x86 | FileCheck %s -check-prefix=X32
|
|
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64
|
|
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-win32 | FileCheck %s -check-prefix=X64
|
|
|
|
; 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 {
|
|
%b = add i32 %a, 128
|
|
ret i32 %b
|
|
; X32: subl $-128, %eax
|
|
; X64: subl $-128,
|
|
}
|
|
define i64 @test2(i64 inreg %a) nounwind {
|
|
%b = add i64 %a, 2147483648
|
|
ret i64 %b
|
|
; X32: addl $-2147483648, %eax
|
|
; X64: subq $-2147483648,
|
|
}
|
|
define i64 @test3(i64 inreg %a) nounwind {
|
|
%b = add i64 %a, 128
|
|
ret i64 %b
|
|
|
|
; X32: addl $128, %eax
|
|
; X64: subq $-128,
|
|
}
|
|
|
|
define i1 @test4(i32 %v1, i32 %v2, i32* %X) nounwind {
|
|
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
|
|
|
|
; X32-LABEL: test4:
|
|
; X32: addl
|
|
; X32-NEXT: jo
|
|
|
|
; X64-LABEL: test4:
|
|
; X64: addl %e[[A1:si|dx]], %e[[A0:di|cx]]
|
|
; X64-NEXT: jo
|
|
}
|
|
|
|
define i1 @test5(i32 %v1, i32 %v2, i32* %X) nounwind {
|
|
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
|
|
|
|
; X32-LABEL: test5:
|
|
; X32: addl
|
|
; X32-NEXT: jb
|
|
|
|
; X64-LABEL: test5:
|
|
; X64: addl %e[[A1]], %e[[A0]]
|
|
; X64-NEXT: jb
|
|
}
|
|
|
|
declare {i32, i1} @llvm.sadd.with.overflow.i32(i32, i32)
|
|
declare {i32, i1} @llvm.uadd.with.overflow.i32(i32, i32)
|
|
|
|
|
|
define i64 @test6(i64 %A, i32 %B) nounwind {
|
|
%tmp12 = zext i32 %B to i64 ; <i64> [#uses=1]
|
|
%tmp3 = shl i64 %tmp12, 32 ; <i64> [#uses=1]
|
|
%tmp5 = add i64 %tmp3, %A ; <i64> [#uses=1]
|
|
ret i64 %tmp5
|
|
|
|
; X32-LABEL: test6:
|
|
; X32: movl 12(%esp), %edx
|
|
; X32-NEXT: addl 8(%esp), %edx
|
|
; X32-NEXT: movl 4(%esp), %eax
|
|
; X32-NEXT: ret
|
|
|
|
; X64-LABEL: test6:
|
|
; X64: shlq $32, %r[[A1]]
|
|
; X64: leaq (%r[[A1]],%r[[A0]]), %rax
|
|
; X64: ret
|
|
}
|
|
|
|
define {i32, i1} @test7(i32 %v1, i32 %v2) nounwind {
|
|
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %v1, i32 %v2)
|
|
ret {i32, i1} %t
|
|
}
|
|
|
|
; X64-LABEL: test7:
|
|
; X64: addl %e[[A1]], %e
|
|
; X64-NEXT: setb %dl
|
|
; X64: ret
|
|
|
|
; PR5443
|
|
define {i64, i1} @test8(i64 %left, i64 %right) nounwind {
|
|
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
|
|
}
|
|
|
|
; X64-LABEL: test8:
|
|
; X64: addq
|
|
; X64-NEXT: setb
|
|
; X64: ret
|
|
|
|
define i32 @test9(i32 %x, i32 %y) nounwind readnone {
|
|
%cmp = icmp eq i32 %x, 10
|
|
%sub = sext i1 %cmp to i32
|
|
%cond = add i32 %sub, %y
|
|
ret i32 %cond
|
|
; X64-LABEL: test9:
|
|
; X64: cmpl $10
|
|
; X64: sete
|
|
; X64: subl
|
|
; X64: ret
|
|
}
|
|
|
|
define i1 @test10(i32 %x) nounwind {
|
|
entry:
|
|
%t = call {i32, i1} @llvm.sadd.with.overflow.i32(i32 %x, i32 1)
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
ret i1 %obit
|
|
|
|
; X32-LABEL: test10:
|
|
; X32: incl
|
|
; X32-NEXT: seto
|
|
|
|
; X64-LABEL: test10:
|
|
; X64: incl
|
|
; X64-NEXT: seto
|
|
}
|