forked from OSchip/llvm-project
73 lines
1.6 KiB
LLVM
73 lines
1.6 KiB
LLVM
; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s
|
|
|
|
define i8 @f1(i8* %v) {
|
|
entry:
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: ldrb r0, [r0]
|
|
%tmp = load i8, i8* %v
|
|
ret i8 %tmp
|
|
}
|
|
|
|
define i8 @f2(i8* %v) {
|
|
entry:
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: ldrb r0, [r0, #-1]
|
|
%tmp2 = getelementptr i8, i8* %v, i8 1023
|
|
%tmp = load i8, i8* %tmp2
|
|
ret i8 %tmp
|
|
}
|
|
|
|
define i8 @f3(i32 %base) {
|
|
entry:
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: mov.w r1, #4096
|
|
; CHECK: ldrb r0, [r0, r1]
|
|
%tmp1 = add i32 %base, 4096
|
|
%tmp2 = inttoptr i32 %tmp1 to i8*
|
|
%tmp3 = load i8, i8* %tmp2
|
|
ret i8 %tmp3
|
|
}
|
|
|
|
define i8 @f4(i32 %base) {
|
|
entry:
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: ldrb r0, [r0, #-128]
|
|
%tmp1 = sub i32 %base, 128
|
|
%tmp2 = inttoptr i32 %tmp1 to i8*
|
|
%tmp3 = load i8, i8* %tmp2
|
|
ret i8 %tmp3
|
|
}
|
|
|
|
define i8 @f5(i32 %base, i32 %offset) {
|
|
entry:
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: ldrb r0, [r0, r1]
|
|
%tmp1 = add i32 %base, %offset
|
|
%tmp2 = inttoptr i32 %tmp1 to i8*
|
|
%tmp3 = load i8, i8* %tmp2
|
|
ret i8 %tmp3
|
|
}
|
|
|
|
define i8 @f6(i32 %base, i32 %offset) {
|
|
entry:
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: ldrb.w r0, [r0, r1, lsl #2]
|
|
%tmp1 = shl i32 %offset, 2
|
|
%tmp2 = add i32 %base, %tmp1
|
|
%tmp3 = inttoptr i32 %tmp2 to i8*
|
|
%tmp4 = load i8, i8* %tmp3
|
|
ret i8 %tmp4
|
|
}
|
|
|
|
define i8 @f7(i32 %base, i32 %offset) {
|
|
entry:
|
|
; CHECK-LABEL: f7:
|
|
; CHECK: lsrs r1, r1, #2
|
|
; CHECK: ldrb r0, [r0, r1]
|
|
%tmp1 = lshr i32 %offset, 2
|
|
%tmp2 = add i32 %base, %tmp1
|
|
%tmp3 = inttoptr i32 %tmp2 to i8*
|
|
%tmp4 = load i8, i8* %tmp3
|
|
ret i8 %tmp4
|
|
}
|