2010-09-17 04:42:06 +08:00
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// RUN: %clang_cc1 -w -fblocks -triple i386-apple-darwin9 -emit-llvm -o %t %s
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// RUN: FileCheck < %t %s
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2019-08-03 22:28:34 +08:00
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// CHECK-LABEL: define void @f0(%struct.s0* byval(%struct.s0) align 4 %0)
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Change memcpy/memove/memset to have dest and source alignment attributes.
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
2018-01-29 01:27:45 +08:00
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 16 %{{.*}}, i8* align 4 %{{.*}}, i32 16, i1 false)
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2010-09-17 04:42:06 +08:00
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// CHECK: }
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struct s0 { long double a; };
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void f0(struct s0 a0) {
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extern long double f0_g0;
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f0_g0 = a0.a;
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}
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