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|
; RUN: llc -mtriple=thumb-eabi %s -verify-machineinstrs -o - | \
; RUN: FileCheck %s -check-prefix CHECK --check-prefix CHECK-EABI
; RUN: llc -mtriple=thumb-apple-darwin %s -verify-machineinstrs -o - | \
; RUN: FileCheck %s -check-prefix CHECK -check-prefix CHECK-DARWIN
define i64 @f1() {
entry:
ret i64 0
; CHECK-LABEL: f1:
; CHECK: movs r0, #0
; CHECK: movs r1, r0
}
define i64 @f2() {
entry:
ret i64 1
; CHECK-LABEL: f2:
; CHECK: movs r0, #1
; CHECK: movs r1, #0
}
define i64 @f3() {
entry:
ret i64 2147483647
; CHECK-LABEL: f3:
; CHECK: ldr r0,
; CHECK: movs r1, #0
}
define i64 @f4() {
entry:
ret i64 2147483648
; CHECK-LABEL: f4:
; CHECK: movs r0, #1
; CHECK: lsls r0, r0, #31
; CHECK: movs r1, #0
}
define i64 @f5() {
entry:
ret i64 9223372036854775807
; CHECK-LABEL: f5:
; CHECK: movs r0, #0
; CHECK: mvns r0, r0
; CHECK: ldr r1,
}
define i64 @f6(i64 %x, i64 %y) {
entry:
%tmp1 = add i64 %y, 1 ; <i64> [#uses=1]
ret i64 %tmp1
; CHECK-LABEL: f6:
; CHECK: movs r1, #0
; CHECK: adds r0, r2, #1
; CHECK: adcs r1, r3
}
define i64 @f6a(i64 %x, i64 %y) {
entry:
%tmp1 = add i64 %y, 10
ret i64 %tmp1
; CHECK-LABEL: f6a:
; CHECK: movs r1, #0
; CHECK: adds r2, #10
; CHECK: adcs r1, r3
; CHECK: movs r0, r2
}
define i64 @f6b(i64 %x, i64 %y) {
entry:
%tmp1 = add i64 %y, 1000
ret i64 %tmp1
; CHECK-LABEL: f6b:
; CHECK: movs r0, #125
; CHECK: lsls r0, r0, #3
; CHECK: movs r1, #0
; CHECK: adds r0, r2, r0
; CHECK: adcs r1, r3
}
define void @f7() {
entry:
%tmp = call i64 @f8( ) ; <i64> [#uses=0]
ret void
; CHECK-LABEL: f7:
; CHECK: bl
}
declare i64 @f8()
define i64 @f9(i64 %a, i64 %b) {
entry:
%tmp = sub i64 %a, %b ; <i64> [#uses=1]
ret i64 %tmp
; CHECK-LABEL: f9:
; CHECK: subs r0, r0, r2
; CHECK: sbcs r1, r3
}
define i64 @f9a(i64 %x, i64 %y) { ; ADDC with small negative imm => SUBS imm
entry:
%tmp1 = sub i64 %y, 10
ret i64 %tmp1
; CHECK-LABEL: f9a:
; CHECK: movs r0, #0
; CHECK: subs r2, #10
; CHECK: sbcs r3, r0
; CHECK: movs r0, r2
; CHECK: movs r1, r3
}
define i64 @f9b(i64 %x, i64 %y) { ; ADDC with big negative imm => SUBS reg
entry:
%tmp1 = sub i64 1000, %y
ret i64 %tmp1
; CHECK-LABEL: f9b:
; CHECK: movs r0, #125
; CHECK: lsls r0, r0, #3
; CHECK: movs r1, #0
; CHECK: subs r0, r0, r2
; CHECK: sbcs r1, r3
}
define i64 @f9c(i64 %x, i32 %y) { ; SUBS with small positive imm => SUBS imm
entry:
%conv = sext i32 %y to i64
%shl = shl i64 %conv, 32
%or = or i64 %shl, 1
%sub = sub nsw i64 %x, %or
ret i64 %sub
; CHECK-LABEL: f9c:
; CHECK: subs r0, r0, #1
; CHECK: sbcs r1, r2
}
define i64 @f9d(i64 %x, i32 %y) { ; SUBS with small negative imm => ADDS imm
entry:
%conv = sext i32 %y to i64
%shl = shl i64 %conv, 32
%or = or i64 %shl, 4294967295
%sub = sub nsw i64 %x, %or
ret i64 %sub
; CHECK-LABEL: f9d:
; CHECK: adds r0, r0, #1
; CHECK: sbcs r1, r2
}
define i64 @f(i32 %a, i32 %b) {
entry:
%tmp = sext i32 %a to i64 ; <i64> [#uses=1]
%tmp1 = sext i32 %b to i64 ; <i64> [#uses=1]
%tmp2 = mul i64 %tmp1, %tmp ; <i64> [#uses=1]
ret i64 %tmp2
; CHECK-LABEL: f:
; CHECK-V6: bl __aeabi_lmul
; CHECK-DARWIN: __muldi3
}
define i64 @g(i32 %a, i32 %b) {
entry:
%tmp = zext i32 %a to i64 ; <i64> [#uses=1]
%tmp1 = zext i32 %b to i64 ; <i64> [#uses=1]
%tmp2 = mul i64 %tmp1, %tmp ; <i64> [#uses=1]
ret i64 %tmp2
; CHECK-LABEL: g:
; CHECK-V6: bl __aeabi_lmul
; CHECK-DARWIN: __muldi3
}
define i64 @f10() {
entry:
%a = alloca i64, align 8 ; <i64*> [#uses=1]
%retval = load i64, i64* %a ; <i64> [#uses=1]
ret i64 %retval
; CHECK-LABEL: f10:
; CHECK-EABI: sub sp, #8
; CHECK-DARWIN: add r7, sp, #4
; CHECK: ldr r0, [sp]
; CHECK: ldr r1, [sp, #4]
; CHECK-EABI: add sp, #8
; CHECK-DARWIN: mov sp, r4
}
define i64 @f11(i64 %x, i64 %y) {
entry:
%tmp1 = add i64 -1000, %y
%tmp2 = add i64 %tmp1, -1000
ret i64 %tmp2
; CHECK-LABEL: f11:
; CHECK: movs r0, #125
; CHECK: lsls r0, r0, #3
; CHECK: movs r1, #0
; CHECK: subs r2, r2, r0
; CHECK: sbcs r3, r1
; CHECK: subs r0, r2, r0
; CHECK: sbcs r3, r1
; CHECK: movs r1, r3
}
; "sub 2147483648" has to be lowered into "add -2147483648"
define i64 @f12(i64 %x, i64 %y) {
entry:
%tmp1 = sub i64 %x, 2147483648
ret i64 %tmp1
; CHECK-LABEL: f12:
; CHECK: movs r2, #1
; CHECK: lsls r2, r2, #31
; CHECK: movs r3, #0
; CHECK: adds r0, r0, r2
; CHECK: sbcs r1, r3
}
declare void @f13(i64 %x)
define void @f14(i1 %x, i64 %y) #0 {
; CHECK-LABEL: f14:
entry:
%a = add i64 %y, 47
call void @f13(i64 %a)
; CHECK: bl
br i1 %x, label %if.end, label %if.then
if.then:
call void @f13(i64 %y)
; CHECK: bl
br label %if.end
if.end:
%b = add i64 %y, 45
call void @f13(i64 %b)
; CHECK: adds
; CHECK: adcs
; CHECK: bl
%c = add i64 %y, 47
call void @f13(i64 %c)
; CHECK: adds
; CHECK-NEXT: adcs
; CHECK: bl
ret void
}
attributes #0 = { optsize }
|
