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llvm-project/llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll

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Change the testcase mtriple to x86_64-unknown-unknown llvm-svn: 234900
2015-04-14 23:28:42 +08:00
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
Allow memory intrinsics to be tail calls llvm-svn: 234764
2015-04-14 01:16:45 +08:00
; CHECK-LABEL: tail_memcpy
; CHECK: jmp memcpy
define void @tail_memcpy(i8* nocapture %p, i8* nocapture readonly %q, i32 %n) #0 {
entry:
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* %q, i32 %n, i32 1, i1 false)
Allow memory intrinsics to be tail calls llvm-svn: 234764
2015-04-14 01:16:45 +08:00
ret void
}
Fix a few more cases of 'CHECK[^:]*$'. NFCI llvm-svn: 244491
2015-08-11 03:56:39 +08:00
; CHECK-LABEL: tail_memmove
; CHECK: jmp memmove
Allow memory intrinsics to be tail calls llvm-svn: 234764
2015-04-14 01:16:45 +08:00
define void @tail_memmove(i8* nocapture %p, i8* nocapture readonly %q, i32 %n) #0 {
entry:
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
tail call void @llvm.memmove.p0i8.p0i8.i32(i8* %p, i8* %q, i32 %n, i32 1, i1 false)
Allow memory intrinsics to be tail calls llvm-svn: 234764
2015-04-14 01:16:45 +08:00
ret void
}
; CHECK-LABEL: tail_memset
; CHECK: jmp memset
define void @tail_memset(i8* nocapture %p, i8 %c, i32 %n) #0 {
entry:
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
tail call void @llvm.memset.p0i8.i32(i8* %p, i8 %c, i32 %n, i32 1, i1 false)
Allow memory intrinsics to be tail calls llvm-svn: 234764
2015-04-14 01:16:45 +08:00
ret void
}
[TailCall] Allow llvm.memcpy/memset/memmove to be tail calls when parent function return the intrinsics's first argument. llvm.memcpy/memset/memmove return void but they will return the first argument after they are expanded as libcalls. Now if the parent function has any return value, llvm.memcpy cannot be turned into tail call after expansion. The patch is to handle that case in SelectionDAGBuilder so when caller function return the same value as the first argument of llvm.memcpy, tail call is allowed. Differential Revision: https://reviews.llvm.org/D37406 llvm-svn: 312641
2017-09-07 00:05:17 +08:00
; CHECK-LABEL: tail_memcpy_ret
; CHECK: jmp memcpy
define i8* @tail_memcpy_ret(i8* nocapture %p, i8* nocapture readonly %q, i32 %n) #0 {
entry:
tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* %q, i32 %n, i32 1, i1 false)
ret i8* %p
}
; CHECK-LABEL: tail_memmove_ret
; CHECK: jmp memmove
define i8* @tail_memmove_ret(i8* nocapture %p, i8* nocapture readonly %q, i32 %n) #0 {
entry:
tail call void @llvm.memmove.p0i8.p0i8.i32(i8* %p, i8* %q, i32 %n, i32 1, i1 false)
ret i8* %p
}
; CHECK-LABEL: tail_memset_ret
; CHECK: jmp memset
define i8* @tail_memset_ret(i8* nocapture %p, i8 %c, i32 %n) #0 {
entry:
tail call void @llvm.memset.p0i8.i32(i8* %p, i8 %c, i32 %n, i32 1, i1 false)
ret i8* %p
}
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #0
declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #0
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) #0
Allow memory intrinsics to be tail calls llvm-svn: 234764
2015-04-14 01:16:45 +08:00
attributes #0 = { nounwind }