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c8bdc8db73
Summary: This change is step three in the series of changes to remove alignment argument from memcpy/memmove/memset in favour of alignment attributes. Steps: Step 1) Remove alignment parameter and create alignment parameter attributes for memcpy/memmove/memset. ( rL322965, rC322964, rL322963 ) Step 2) Expand the IRBuilder API to allow creation of memcpy/memmove with differing source and dest alignments. ( rL323597 ) Step 3) Update Clang to use the new IRBuilder API. Step 4) Update Polly to use the new IRBuilder API. Step 5) Update LLVM passes that create memcpy/memmove calls to use the new IRBuilder API, and those that use use MemIntrinsicInst::[get|set]Alignment() to use getDestAlignment() and getSourceAlignment() instead. Step 6) Remove the single-alignment IRBuilder API for memcpy/memmove, and the MemIntrinsicInst::[get|set]Alignment() methods. Reference http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html Reviewers: rjmccall Subscribers: jyknight, nemanjai, nhaehnle, javed.absar, sbc100, aheejin, kbarton, fedor.sergeev, cfe-commits Differential Revision: https://reviews.llvm.org/D41677 llvm-svn: 323617
13 lines
523 B
C
13 lines
523 B
C
// RUN: %clang_cc1 -triple aarch64_be-linux-gnu -ffreestanding -emit-llvm -O0 -o - %s | FileCheck --check-prefix IR %s
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struct bt3 { signed b2:10; signed b3:10; } b16;
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// Get the high 32-bits and then shift appropriately for big-endian.
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signed callee_b0f(struct bt3 bp11) {
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// IR: callee_b0f(i64 [[ARG:%.*]])
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// IR: store i64 [[ARG]], i64* [[PTR:%.*]], align 8
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// IR: [[BITCAST:%.*]] = bitcast i64* [[PTR]] to i8*
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// IR: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* align 8 [[BITCAST]], i64 4
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return bp11.b2;
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}
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