llvm/test/CodeGen/ARM/fast-isel-ldrh-strh-arm.ll

; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios | FileCheck %s --check-prefix=ARM
; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi | FileCheck %s --check-prefix=ARM
; rdar://10418009

define zeroext i16 @t1(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t1:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 -8
  %0 = load i16, i16* %add.ptr, align 2
; ARM: ldrh r0, [r0, #-16]
  ret i16 %0
}

define zeroext i16 @t2(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t2:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 -16
  %0 = load i16, i16* %add.ptr, align 2
; ARM: ldrh r0, [r0, #-32]
  ret i16 %0
}

define zeroext i16 @t3(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t3:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 -127
  %0 = load i16, i16* %add.ptr, align 2
; ARM: ldrh r0, [r0, #-254]
  ret i16 %0
}

define zeroext i16 @t4(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t4:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 -128
  %0 = load i16, i16* %add.ptr, align 2
; ARM: mvn r{{[1-9]}}, #255
; ARM: add r0, r0, r{{[1-9]}}
; ARM: ldrh r0, [r0]
  ret i16 %0
}

define zeroext i16 @t5(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t5:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 8
  %0 = load i16, i16* %add.ptr, align 2
; ARM: ldrh r0, [r0, #16]
  ret i16 %0
}

define zeroext i16 @t6(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t6:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 16
  %0 = load i16, i16* %add.ptr, align 2
; ARM: ldrh r0, [r0, #32]
  ret i16 %0
}

define zeroext i16 @t7(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t7:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 127
  %0 = load i16, i16* %add.ptr, align 2
; ARM: ldrh r0, [r0, #254]
  ret i16 %0
}

define zeroext i16 @t8(i16* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t8:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 128
  %0 = load i16, i16* %add.ptr, align 2
; ARM: add r0, r0, #256
; ARM: ldrh r0, [r0]
  ret i16 %0
}

define void @t9(i16* nocapture %a) nounwind uwtable ssp {
entry:
; ARM-LABEL: t9:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 -8
  store i16 0, i16* %add.ptr, align 2
; ARM: movw [[REG0:r[0-9]+]], #0
; ARM: strh [[REG0]], [{{r[0-9]+}}, #-16]
  ret void
}

; mvn r1, #255
; strh r2, [r0, r1]
define void @t10(i16* nocapture %a) nounwind uwtable ssp {
entry:
; ARM-LABEL: t10:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 -128
  store i16 0, i16* %add.ptr, align 2
; ARM: mov r1, r0
; ARM: movw [[REG1:r[0-9]+]], #0
; ARM: mvn [[REG2:r[0-9]+]], #255
; ARM: add [[REG0:r[0-9]+]], r1, [[REG2]]
; ARM: strh [[REG1]], {{\[}}[[REG0]]]
  ret void
}

define void @t11(i16* nocapture %a) nounwind uwtable ssp {
entry:
; ARM-LABEL: t11:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 8
  store i16 0, i16* %add.ptr, align 2
; ARM: movw [[REG1:r[0-9]+]], #0
; ARM: strh [[REG1]], [{{r[0-9]+}}, #16]
  ret void
}

; mov r1, #256
; strh r2, [r0, r1]
define void @t12(i16* nocapture %a) nounwind uwtable ssp {
entry:
; ARM-LABEL: t12:
  %add.ptr = getelementptr inbounds i16, i16* %a, i64 128
  store i16 0, i16* %add.ptr, align 2
; ARM: mov r1, r0
; ARM: movw [[REG1:r[0-9]+]], #0
; ARM: add [[REG0:r[0-9]+]], r1, #256
; ARM: strh [[REG1]], {{\[}}[[REG0]]]
  ret void
}

define signext i8 @t13(i8* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t13:
  %add.ptr = getelementptr inbounds i8, i8* %a, i64 -8
  %0 = load i8, i8* %add.ptr, align 2
; ARM: ldrsb r0, [r0, #-8]
  ret i8 %0
}

define signext i8 @t14(i8* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t14:
  %add.ptr = getelementptr inbounds i8, i8* %a, i64 -255
  %0 = load i8, i8* %add.ptr, align 2
; ARM: ldrsb r0, [r0, #-255]
  ret i8 %0
}

define signext i8 @t15(i8* nocapture %a) nounwind uwtable readonly ssp {
entry:
; ARM-LABEL: t15:
  %add.ptr = getelementptr inbounds i8, i8* %a, i64 -256
  %0 = load i8, i8* %add.ptr, align 2
; ARM: mvn r{{[1-9]}}, #255
; ARM: add r0, r0, r{{[1-9]}}
; ARM: ldrsb r0, [r0]
  ret i8 %0
}