| ; RUN: llc -mtriple=armv7-linux-gnueabihf %s -o - | FileCheck %s |
| |
| ; Check that we don't create an unpredictable STR instruction, |
| ; e.g. str r0, [r0], #4 |
| |
| define ptr @earlyclobber-str-post(ptr %addr) nounwind { |
| ; CHECK-LABEL: earlyclobber-str-post |
| ; CHECK-NOT: str r[[REG:[0-9]+]], [r[[REG]]], #4 |
| %val = ptrtoint ptr %addr to i32 |
| store i32 %val, ptr %addr |
| %new = getelementptr i32, ptr %addr, i32 1 |
| ret ptr %new |
| } |
| |
| define ptr @earlyclobber-strh-post(ptr %addr) nounwind { |
| ; CHECK-LABEL: earlyclobber-strh-post |
| ; CHECK-NOT: strh r[[REG:[0-9]+]], [r[[REG]]], #2 |
| %val = ptrtoint ptr %addr to i32 |
| %tr = trunc i32 %val to i16 |
| store i16 %tr, ptr %addr |
| %new = getelementptr i16, ptr %addr, i32 1 |
| ret ptr %new |
| } |
| |
| define ptr @earlyclobber-strb-post(ptr %addr) nounwind { |
| ; CHECK-LABEL: earlyclobber-strb-post |
| ; CHECK-NOT: strb r[[REG:[0-9]+]], [r[[REG]]], #1 |
| %val = ptrtoint ptr %addr to i32 |
| %tr = trunc i32 %val to i8 |
| store i8 %tr, ptr %addr |
| %new = getelementptr i8, ptr %addr, i32 1 |
| ret ptr %new |
| } |