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llvm-project/llvm/test/CodeGen/X86/memset-2.ll

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regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
; NOTE: Assertions have been autogenerated by update_test_checks.py
Update tests to use at least darwin9. llvm-svn: 274129
2016-06-29 22:51:10 +08:00
; RUN: llc -mtriple=i386-apple-darwin9 -mcpu=yonah < %s | FileCheck %s
Fix a number of byval / memcpy / memset related codegen issues. 1. x86-64 byval alignment should be max of 8 and alignment of type. Previously the code was not doing what the commit message was saying. 2. Do not use byte repeat move and store operations. These are slow. llvm-svn: 55139
2008-08-22 05:00:15 +08:00
- Avoid using floating point stores to implement memset unless the value is zero. - Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type. llvm-svn: 100118
2010-04-02 02:19:11 +08:00
define fastcc void @t1() nounwind {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP done sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 14:24:09 +08:00
; CHECK-LABEL: t1:
[x86] regenerate checks utils/update_test_checks.py was improved with: http://reviews.llvm.org/rL265414 to include the first line of the function (expected to be a comment line). This ensures that nothing bad has happened before the first actual line of checked asm. It also matches the existing behavior of the old script. llvm-svn: 265416
2016-04-06 01:12:19 +08:00
; CHECK: ## BB#0: ## %entry
Re-commit r265039 "[X86] Merge adjacent stack adjustments in eliminateCallFramePseudoInstr (PR27140)" Third time's the charm? The previous attempt (r265345) caused ASan test failures on X86, as broken CFI caused stack traces to not work. This version of the patch makes sure not to merge with stack adjustments that have CFI, and to not add merged instructions' offests to the CFI about to be generated. This is already covered by the lit tests; I just got the expectations wrong previously. llvm-svn: 265623
2016-04-07 08:05:49 +08:00
; CHECK-NEXT: subl $16, %esp
[x86] regenerate checks utils/update_test_checks.py was improved with: http://reviews.llvm.org/rL265414 to include the first line of the function (expected to be a comment line). This ensures that nothing bad has happened before the first actual line of checked asm. It also matches the existing behavior of the old script. llvm-svn: 265416
2016-04-06 01:12:19 +08:00
; CHECK-NEXT: pushl $188
[X86] Enable call frame optimization ("mov to push") not only for optsize (PR26325) The size savings are significant, and from what I can tell, both ICC and GCC do this. Differential Revision: http://reviews.llvm.org/D18573 llvm-svn: 264966
2016-03-31 07:38:01 +08:00
; CHECK-NEXT: pushl $0
; CHECK-NEXT: pushl $0
Update tests to use at least darwin9. llvm-svn: 274129
2016-06-29 22:51:10 +08:00
; CHECK-NEXT: calll _memset
[x86] regenerate checks utils/update_test_checks.py was improved with: http://reviews.llvm.org/rL265414 to include the first line of the function (expected to be a comment line). This ensures that nothing bad has happened before the first actual line of checked asm. It also matches the existing behavior of the old script. llvm-svn: 265416
2016-04-06 01:12:19 +08:00
; CHECK-NEXT: addl $16, %esp
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
;
entry:
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
call void @llvm.memset.p0i8.i32(i8* null, i8 0, i32 188, i32 1, i1 false)
Fix sdisel memcpy, memset, memmove lowering: 1. Makes it possible to lower with floating point loads and stores. 2. Avoid unaligned loads / stores unless it's fast. 3. Fix some memcpy lowering logic bug related to when to optimize a load from constant string into a constant. 4. Adjust x86 memcpy lowering threshold to make it more sane. 5. Fix x86 target hook so it uses vector and floating point memory ops more effectively. rdar://7774704 llvm-svn: 100090
2010-04-01 14:04:33 +08:00
unreachable
Fix a number of byval / memcpy / memset related codegen issues. 1. x86-64 byval alignment should be max of 8 and alignment of type. Previously the code was not doing what the commit message was saying. 2. Do not use byte repeat move and store operations. These are slow. llvm-svn: 55139
2008-08-22 05:00:15 +08:00
}
- Avoid using floating point stores to implement memset unless the value is zero. - Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type. llvm-svn: 100118
2010-04-02 02:19:11 +08:00
define fastcc void @t2(i8 signext %c) nounwind {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP done sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 14:24:09 +08:00
; CHECK-LABEL: t2:
[x86] regenerate checks utils/update_test_checks.py was improved with: http://reviews.llvm.org/rL265414 to include the first line of the function (expected to be a comment line). This ensures that nothing bad has happened before the first actual line of checked asm. It also matches the existing behavior of the old script. llvm-svn: 265416
2016-04-06 01:12:19 +08:00
; CHECK: ## BB#0: ## %entry
; CHECK-NEXT: subl $12, %esp
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
; CHECK-NEXT: movl %ecx, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl $76, {{[0-9]+}}(%esp)
Update tests to use at least darwin9. llvm-svn: 274129
2016-06-29 22:51:10 +08:00
; CHECK-NEXT: calll _memset
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
;
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
call void @llvm.memset.p0i8.i32(i8* undef, i8 %c, i32 76, i32 1, i1 false)
- Avoid using floating point stores to implement memset unless the value is zero. - Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type. llvm-svn: 100118
2010-04-02 02:19:11 +08:00
unreachable
}
Lower the i8 extension in memset to a multiply instead of a potentially long series of shifts and ors. We could implement a DAGCombine to turn x * 0x0101 back into logic operations on targets that doesn't support the multiply or it is slow (p4) if someone cares enough. Example code: void test(char *s, int a) { __builtin_memset(s, a, 4); } before: _test: ## @test movzbl 8(%esp), %eax movl %eax, %ecx shll $8, %ecx orl %eax, %ecx movl %ecx, %eax shll $16, %eax orl %ecx, %eax movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret after: _test: ## @test movzbl 8(%esp), %eax imull $16843009, %eax, %eax ## imm = 0x1010101 movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret llvm-svn: 122707
2011-01-03 03:44:58 +08:00
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.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
Lower the i8 extension in memset to a multiply instead of a potentially long series of shifts and ors. We could implement a DAGCombine to turn x * 0x0101 back into logic operations on targets that doesn't support the multiply or it is slow (p4) if someone cares enough. Example code: void test(char *s, int a) { __builtin_memset(s, a, 4); } before: _test: ## @test movzbl 8(%esp), %eax movl %eax, %ecx shll $8, %ecx orl %eax, %ecx movl %ecx, %eax shll $16, %eax orl %ecx, %eax movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret after: _test: ## @test movzbl 8(%esp), %eax imull $16843009, %eax, %eax ## imm = 0x1010101 movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret llvm-svn: 122707
2011-01-03 03:44:58 +08:00
define void @t3(i8* nocapture %s, i8 %a) nounwind {
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
; CHECK-LABEL: t3:
[x86] regenerate checks utils/update_test_checks.py was improved with: http://reviews.llvm.org/rL265414 to include the first line of the function (expected to be a comment line). This ensures that nothing bad has happened before the first actual line of checked asm. It also matches the existing behavior of the old script. llvm-svn: 265416
2016-04-06 01:12:19 +08:00
; CHECK: ## BB#0: ## %entry
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
; CHECK-NEXT: movzbl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: imull $16843009, %ecx, %ecx ## imm = 0x1010101
; CHECK-NEXT: movl %ecx, 4(%eax)
; CHECK-NEXT: movl %ecx, (%eax)
; CHECK-NEXT: retl
;
Lower the i8 extension in memset to a multiply instead of a potentially long series of shifts and ors. We could implement a DAGCombine to turn x * 0x0101 back into logic operations on targets that doesn't support the multiply or it is slow (p4) if someone cares enough. Example code: void test(char *s, int a) { __builtin_memset(s, a, 4); } before: _test: ## @test movzbl 8(%esp), %eax movl %eax, %ecx shll $8, %ecx orl %eax, %ecx movl %ecx, %eax shll $16, %eax orl %ecx, %eax movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret after: _test: ## @test movzbl 8(%esp), %eax imull $16843009, %eax, %eax ## imm = 0x1010101 movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret llvm-svn: 122707
2011-01-03 03:44:58 +08:00
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* %s, i8 %a, i32 8, i32 1, i1 false)
Lower the i8 extension in memset to a multiply instead of a potentially long series of shifts and ors. We could implement a DAGCombine to turn x * 0x0101 back into logic operations on targets that doesn't support the multiply or it is slow (p4) if someone cares enough. Example code: void test(char *s, int a) { __builtin_memset(s, a, 4); } before: _test: ## @test movzbl 8(%esp), %eax movl %eax, %ecx shll $8, %ecx orl %eax, %ecx movl %ecx, %eax shll $16, %eax orl %ecx, %eax movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret after: _test: ## @test movzbl 8(%esp), %eax imull $16843009, %eax, %eax ## imm = 0x1010101 movl 4(%esp), %ecx movl %eax, 4(%ecx) movl %eax, (%ecx) ret llvm-svn: 122707
2011-01-03 03:44:58 +08:00
ret void
}
Try to reuse the value when lowering memset. This allows us to compile: void test(char *s, int a) { __builtin_memset(s, a, 15); } into 1 mul + 3 stores instead of 3 muls + 3 stores. llvm-svn: 122710
2011-01-03 03:57:05 +08:00
define void @t4(i8* nocapture %s, i8 %a) nounwind {
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
; CHECK-LABEL: t4:
[x86] regenerate checks utils/update_test_checks.py was improved with: http://reviews.llvm.org/rL265414 to include the first line of the function (expected to be a comment line). This ensures that nothing bad has happened before the first actual line of checked asm. It also matches the existing behavior of the old script. llvm-svn: 265416
2016-04-06 01:12:19 +08:00
; CHECK: ## BB#0: ## %entry
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
regenerate checks llvm-svn: 264738
2016-03-30 00:11:29 +08:00
; CHECK-NEXT: movzbl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: imull $16843009, %ecx, %ecx ## imm = 0x1010101
; CHECK-NEXT: movl %ecx, 8(%eax)
; CHECK-NEXT: movl %ecx, 4(%eax)
; CHECK-NEXT: movl %ecx, (%eax)
; CHECK-NEXT: movw %cx, 12(%eax)
; CHECK-NEXT: movb %cl, 14(%eax)
; CHECK-NEXT: retl
;
Try to reuse the value when lowering memset. This allows us to compile: void test(char *s, int a) { __builtin_memset(s, a, 15); } into 1 mul + 3 stores instead of 3 muls + 3 stores. llvm-svn: 122710
2011-01-03 03:57:05 +08:00
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* %s, i8 %a, i32 15, i32 1, i1 false)
Try to reuse the value when lowering memset. This allows us to compile: void test(char *s, int a) { __builtin_memset(s, a, 15); } into 1 mul + 3 stores instead of 3 muls + 3 stores. llvm-svn: 122710
2011-01-03 03:57:05 +08:00
ret void
}