mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
1334acd8c6
With constant-sharing, litpool loads consume 4 + N*2 bytes of code, but movw/movt pairs consume 8*N. This means litpools are better than movw/movt even with just one use. Other materialisation strategies can still be better though, so the logic is a little odd. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199891 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
1.8 KiB
LLVM
58 lines
1.8 KiB
LLVM
; RUN: llc -mtriple=thumbv7m-macho -o - -show-mc-encoding %s | FileCheck %s
|
|
; RUN: llc -mtriple=thumbv6m-macho -o - -show-mc-encoding %s | FileCheck %s --check-prefix=CHECK-V6M
|
|
; RUN: llc -mtriple=armv6-macho -o - -show-mc-encoding %s | FileCheck %s --check-prefix=CHECK-ARM
|
|
define i32 @test_mov() minsize {
|
|
; CHECK-LABEL: test_mov:
|
|
; CHECK: movs r0, #255 @ encoding: [0xff,0x20]
|
|
|
|
ret i32 255
|
|
}
|
|
|
|
define i32 @test_mov_mvn() minsize {
|
|
; CHECK-LABEL: test_mov_mvn:
|
|
; CHECK: mvn r0, #203 @ encoding: [0x6f,0xf0,0xcb,0x00]
|
|
|
|
; CHECK-V6M-LABEL: test_mov_mvn:
|
|
; CHECK-V6M: movs [[TMP:r[0-7]]], #203 @ encoding: [0xcb,0x20]
|
|
; CHECK-V6M: mvns r0, [[TMP]] @ encoding: [0xc0,0x43]
|
|
|
|
; CHECK-ARM-LABEL: test_mov_mvn:
|
|
; CHECK-ARM: mvn r0, #203 @ encoding: [0xcb,0x00,0xe0,0xe3]
|
|
ret i32 4294967092
|
|
}
|
|
|
|
define i32 @test_mov_lsl() minsize {
|
|
; CHECK-LABEL: test_mov_lsl:
|
|
; CHECK: mov.w r0, #589824 @ encoding: [0x4f,0xf4,0x10,0x20]
|
|
|
|
; CHECK-V6M-LABEL: test_mov_lsl:
|
|
; CHECK-V6M: movs [[TMP:r[0-7]]], #9 @ encoding: [0x09,0x20]
|
|
; CHECK-V6M: lsls r0, [[TMP]], #16 @ encoding: [0x00,0x04]
|
|
|
|
; CHECK-ARM-LABEL: test_mov_lsl:
|
|
; CHECK-ARM: mov r0, #589824 @ encoding: [0x09,0x08,0xa0,0xe3]
|
|
ret i32 589824
|
|
}
|
|
|
|
define i32 @test_movw() minsize {
|
|
; CHECK-LABEL: test_movw:
|
|
; CHECK: movw r0, #65535
|
|
|
|
; CHECK-V6M-LABEL: test_movw:
|
|
; CHECK-V6M: ldr r0, [[CONSTPOOL:LCPI[0-9]+_[0-9]+]] @ encoding: [A,0x48]
|
|
; CHECK-V6M: [[CONSTPOOL]]:
|
|
; CHECK-V6M-NEXT: .long 65535
|
|
|
|
; CHECK-ARM-LABEL: test_movw:
|
|
; CHECK-ARM: mov r0, #255 @ encoding: [0xff,0x00,0xa0,0xe3]
|
|
; CHECK-ARM: orr r0, r0, #65280 @ encoding: [0xff,0x0c,0x80,0xe3]
|
|
ret i32 65535
|
|
}
|
|
|
|
define i32 @test_regress1() {
|
|
; CHECK-ARM-LABEL: test_regress1:
|
|
; CHECK-ARM: mov r0, #248 @ encoding: [0xf8,0x00,0xa0,0xe3]
|
|
; CHECK-ARM: orr r0, r0, #16252928 @ encoding: [0x3e,0x07,0x80,0xe3]
|
|
ret i32 16253176
|
|
}
|