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Add support to match @llvm.prefetch to pld / pldw / pli. rdar://8601536.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118152 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-11-03 05:14:24 +00:00
parent cdbbec43a8
commit bc7deb0f75
6 changed files with 119 additions and 55 deletions
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test/CodeGen/ARM/prefetch.ll
+64
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; RUN: llc < %s -march=thumb -mattr=-thumb2 | not grep pld
; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s -check-prefix=THUMB2
; RUN: llc < %s -march=arm -mattr=+v5te | FileCheck %s -check-prefix=ARM
; rdar://8601536
define void @t1(i8* %ptr) nounwind {
entry:
; ARM: t1:
; ARM: pli [r0]
; ARM: pldw [r0]
; ARM: pld [r0]
; THUMB2: t1:
; THUMB2: pli [r0]
; THUMB2: pldw [r0]
; THUMB2: pld [r0]
tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 1 )
tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 2 )
tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 3 )
ret void
}
define void @t2(i8* %ptr) nounwind {
entry:
; ARM: t2:
; ARM: pld [r0, #1023]
; THUMB2: t2:
; THUMB2: pld [r0, #1023]
%tmp = getelementptr i8* %ptr, i32 1023
tail call void @llvm.prefetch( i8* %tmp, i32 0, i32 3 )
ret void
}
define void @t3(i32 %base, i32 %offset) nounwind {
entry:
; ARM: t3:
; ARM: pld [r0, r1, lsr #2]
; THUMB2: t3:
; THUMB2: lsrs r1, r1, #2
; THUMB2: pld [r0, r1]
%tmp1 = lshr i32 %offset, 2
%tmp2 = add i32 %base, %tmp1
%tmp3 = inttoptr i32 %tmp2 to i8*
tail call void @llvm.prefetch( i8* %tmp3, i32 0, i32 3 )
ret void
}
define void @t4(i32 %base, i32 %offset) nounwind {
entry:
; ARM: t4:
; ARM: pld [r0, r1, lsl #2]
; THUMB2: t4:
; THUMB2: pld [r0, r1, lsl #2]
%tmp1 = shl i32 %offset, 2
%tmp2 = add i32 %base, %tmp1
%tmp3 = inttoptr i32 %tmp2 to i8*
tail call void @llvm.prefetch( i8* %tmp3, i32 0, i32 3 )
ret void
}
declare void @llvm.prefetch(i8*, i32, i32) nounwind