thumb2-ldr.ll
1.63 KB
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; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s
define i32 @f1(i32* %v) {
entry:
; CHECK-LABEL: f1:
; CHECK: ldr r0, [r0]
%tmp = load i32, i32* %v
ret i32 %tmp
}
define i32 @f2(i32* %v) {
entry:
; CHECK-LABEL: f2:
; CHECK: ldr.w r0, [r0, #4092]
%tmp2 = getelementptr i32, i32* %v, i32 1023
%tmp = load i32, i32* %tmp2
ret i32 %tmp
}
define i32 @f3(i32* %v) {
entry:
; CHECK-LABEL: f3:
; CHECK: mov.w r1, #4096
; CHECK: ldr r0, [r0, r1]
%tmp2 = getelementptr i32, i32* %v, i32 1024
%tmp = load i32, i32* %tmp2
ret i32 %tmp
}
define i32 @f4(i32 %base) {
entry:
; CHECK-LABEL: f4:
; CHECK: ldr r0, [r0, #-128]
%tmp1 = sub i32 %base, 128
%tmp2 = inttoptr i32 %tmp1 to i32*
%tmp3 = load i32, i32* %tmp2
ret i32 %tmp3
}
define i32 @f5(i32 %base, i32 %offset) {
entry:
; CHECK-LABEL: f5:
; CHECK: ldr r0, [r0, r1]
%tmp1 = add i32 %base, %offset
%tmp2 = inttoptr i32 %tmp1 to i32*
%tmp3 = load i32, i32* %tmp2
ret i32 %tmp3
}
define i32 @f6(i32 %base, i32 %offset) {
entry:
; CHECK-LABEL: f6:
; CHECK: ldr.w r0, [r0, r1, lsl #2]
%tmp1 = shl i32 %offset, 2
%tmp2 = add i32 %base, %tmp1
%tmp3 = inttoptr i32 %tmp2 to i32*
%tmp4 = load i32, i32* %tmp3
ret i32 %tmp4
}
define i32 @f7(i32 %base, i32 %offset) {
entry:
; CHECK-LABEL: f7:
; CHECK: lsrs r1, r1, #2
; CHECK: ldr r0, [r0, r1]
%tmp1 = lshr i32 %offset, 2
%tmp2 = add i32 %base, %tmp1
%tmp3 = inttoptr i32 %tmp2 to i32*
%tmp4 = load i32, i32* %tmp3
ret i32 %tmp4
}