110 lines
2.1 KiB
LLVM
110 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=thumbv7m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T2
|
|
; RUN: llc -mtriple=thumbv6m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T1
|
|
|
|
; CHECK-LABEL: single_bit:
|
|
; CHECK: lsls r0, r0, #23
|
|
; T2-NEXT: mov
|
|
; T2-NEXT: it
|
|
; T1-NEXT: bmi
|
|
define i32 @single_bit(i32 %p) {
|
|
%a = and i32 %p, 256
|
|
%b = icmp eq i32 %a, 0
|
|
br i1 %b, label %true, label %false
|
|
|
|
true:
|
|
ret i32 1
|
|
|
|
false:
|
|
ret i32 2
|
|
}
|
|
|
|
; CHECK-LABEL: single_bit_multi_use:
|
|
; CHECK: lsls r0, r0, #23
|
|
; T2-NEXT: mov
|
|
; T2-NEXT: it
|
|
; T1-NEXT: bmi
|
|
define i32 @single_bit_multi_use(i32 %p, i32* %z) {
|
|
store i32 %p, i32* %z
|
|
%a = and i32 %p, 256
|
|
%b = icmp eq i32 %a, 0
|
|
br i1 %b, label %true, label %false
|
|
|
|
true:
|
|
ret i32 1
|
|
|
|
false:
|
|
ret i32 2
|
|
}
|
|
|
|
; CHECK-LABEL: multi_bit_lsb_ubfx:
|
|
; CHECK: lsls r0, r0, #24
|
|
; T2-NEXT: mov
|
|
; T2-NEXT: it
|
|
; T1-NEXT: beq
|
|
define i32 @multi_bit_lsb_ubfx(i32 %p) {
|
|
%a = and i32 %p, 255
|
|
%b = icmp eq i32 %a, 0
|
|
br i1 %b, label %true, label %false
|
|
|
|
true:
|
|
ret i32 1
|
|
|
|
false:
|
|
ret i32 2
|
|
}
|
|
|
|
; CHECK-LABEL: multi_bit_msb:
|
|
; CHECK: lsrs r0, r0, #24
|
|
; T2-NEXT: mov
|
|
; T2-NEXT: it
|
|
; T1-NEXT: beq
|
|
define i32 @multi_bit_msb(i32 %p) {
|
|
%a = and i32 %p, 4278190080 ; 0xff000000
|
|
%b = icmp eq i32 %a, 0
|
|
br i1 %b, label %true, label %false
|
|
|
|
true:
|
|
ret i32 1
|
|
|
|
false:
|
|
ret i32 2
|
|
}
|
|
|
|
; CHECK-LABEL: multi_bit_nosb:
|
|
; T1: lsls r0, r0, #8
|
|
; T1-NEXT: lsrs r0, r0, #24
|
|
; T2: tst.w
|
|
; T2-NEXT: it
|
|
; T1-NEXT: beq
|
|
define i32 @multi_bit_nosb(i32 %p) {
|
|
%a = and i32 %p, 16711680 ; 0x00ff0000
|
|
%b = icmp eq i32 %a, 0
|
|
br i1 %b, label %true, label %false
|
|
|
|
true:
|
|
ret i32 1
|
|
|
|
false:
|
|
ret i32 2
|
|
}
|
|
|
|
; CHECK-LABEL: i16_cmpz:
|
|
; T1: uxth r0, r0
|
|
; T1-NEXT: lsrs r0, r0, #9
|
|
; T1-NEXT: bne
|
|
; T2: uxth r0, r0
|
|
; T2-NEXT: movs r2, #0
|
|
; T2-NEXT: cmp.w r2, r0, lsr #9
|
|
define void @i16_cmpz(i16 %x, void (i32)* %foo) {
|
|
entry:
|
|
%cmp = icmp ult i16 %x, 512
|
|
br i1 %cmp, label %if.then, label %if.end
|
|
|
|
if.then: ; preds = %entry
|
|
tail call void %foo(i32 0) #1
|
|
br label %if.end
|
|
|
|
if.end: ; preds = %if.then, %entry
|
|
ret void
|
|
}
|