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the load, then it may be legal to transform the load and store to integer load and store of the same width. This is done if the target specified the transformation as profitable. e.g. On arm, this can transform: vldr.32 s0, [] vstr.32 s0, [] to ldr r12, [] str r12, [] rdar://8944252 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124708 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
910 B
LLVM
29 lines
910 B
LLVM
; RUN: llc < %s -mtriple=armv7-apple-darwin -mcpu=cortex-a8 | FileCheck %s
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; Check if the f32 load / store pair are optimized to i32 load / store.
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; rdar://8944252
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define void @t(i32 %width, float* nocapture %src, float* nocapture %dst, i32 %index) nounwind {
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; CHECK: t:
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entry:
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%src6 = bitcast float* %src to i8*
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%0 = icmp eq i32 %width, 0
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br i1 %0, label %return, label %bb
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bb:
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; CHECK: ldr [[REGISTER:(r[0-9]+)]], [r1], r3
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; CHECK: str [[REGISTER]], [r2], #4
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%j.05 = phi i32 [ %2, %bb ], [ 0, %entry ]
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%tmp = mul i32 %j.05, %index
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%uglygep = getelementptr i8* %src6, i32 %tmp
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%src_addr.04 = bitcast i8* %uglygep to float*
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%dst_addr.03 = getelementptr float* %dst, i32 %j.05
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%1 = load float* %src_addr.04, align 4
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store float %1, float* %dst_addr.03, align 4
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%2 = add i32 %j.05, 1
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%exitcond = icmp eq i32 %2, %width
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br i1 %exitcond, label %return, label %bb
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return:
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ret void
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}
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