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TheRock/compiler/amd-llvm/llvm/test/CodeGen/ARM/2014-07-18-earlyclobber-str-post.ll
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

34 lines
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LLVM

; 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
}