You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.3 KiB
58 lines
1.3 KiB
; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-a8 %s -o - | FileCheck %s --check-prefix=A8
|
|
; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-m3 %s -o - | FileCheck %s --check-prefix=M3
|
|
; rdar://11318438
|
|
|
|
define zeroext i8 @test1(i32 %A.u) {
|
|
; A8-LABEL: test1:
|
|
; A8: uxtb r0, r0
|
|
%B.u = trunc i32 %A.u to i8
|
|
ret i8 %B.u
|
|
}
|
|
|
|
define zeroext i32 @test2(i32 %A.u, i32 %B.u) {
|
|
; A8-LABEL: test2:
|
|
; A8: uxtab r0, r0, r1
|
|
|
|
; M3-LABEL: test2:
|
|
; M3: uxtb r1, r1
|
|
; M3-NOT: uxtab
|
|
; M3: add r0, r1
|
|
%C.u = trunc i32 %B.u to i8
|
|
%D.u = zext i8 %C.u to i32
|
|
%E.u = add i32 %A.u, %D.u
|
|
ret i32 %E.u
|
|
}
|
|
|
|
define zeroext i32 @test3(i32 %A.u) {
|
|
; A8-LABEL: test3:
|
|
; A8: ubfx r0, r0, #8, #16
|
|
%B.u = lshr i32 %A.u, 8
|
|
%C.u = shl i32 %A.u, 24
|
|
%D.u = or i32 %B.u, %C.u
|
|
%E.u = trunc i32 %D.u to i16
|
|
%F.u = zext i16 %E.u to i32
|
|
ret i32 %F.u
|
|
}
|
|
|
|
define i32 @test4(i32 %A, i32 %X) {
|
|
; A8-LABEL: test4:
|
|
; A8: uxtab r0, r0, r1, ror #16
|
|
%X.hi = lshr i32 %X, 16
|
|
%X.trunc = trunc i32 %X.hi to i8
|
|
%addend = zext i8 %X.trunc to i32
|
|
|
|
%sum = add i32 %A, %addend
|
|
ret i32 %sum
|
|
}
|
|
|
|
define i32 @test5(i32 %A, i32 %X) {
|
|
; A8-LABEL: test5:
|
|
; A8: uxtah r0, r0, r1, ror #8
|
|
%X.hi = lshr i32 %X, 8
|
|
%X.trunc = trunc i32 %X.hi to i16
|
|
%addend = zext i16 %X.trunc to i32
|
|
|
|
%sum = add i32 %A, %addend
|
|
ret i32 %sum
|
|
}
|