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llvm-mirror/test/CodeGen/X86/ret-mmx.ll

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Pad Short Functions for Intel Atom The current Intel Atom microarchitecture has a feature whereby when a function returns early then it is slightly faster to execute a sequence of NOP instructions to wait until the return address is ready, as opposed to simply stalling on the ret instruction until the return address is ready. When compiling for X86 Atom only, this patch will run a pass, called "X86PadShortFunction" which will add NOP instructions where less than four cycles elapse between function entry and return. It includes tests. This patch has been updated to address Nadav's review comments - Optimize only at >= O1 and don't do optimization if -Os is set - Stores MachineBasicBlock* instead of BBNum - Uses DenseMap instead of std::map - Fixes placement of braces Patch by Andy Zhang. llvm-svn: 171879
2013-01-08 19:27:24 +01:00
; RUN: llc < %s -mtriple=x86_64-apple-darwin11 -mcpu=core2 -mattr=+mmx,+sse2 | FileCheck %s
Support return of MMX values in 64-bit mode. llvm-svn: 65152
2009-02-20 21:43:02 +01:00
; rdar://6602459
@g_v1di = external global <1 x i64>
Be bug compatible with gcc by returning MMX values in RAX. llvm-svn: 65274
2009-02-22 09:05:12 +01:00
define void @t1() nounwind {
Support return of MMX values in 64-bit mode. llvm-svn: 65152
2009-02-20 21:43:02 +01:00
entry:
%call = call <1 x i64> @return_v1di() ; <<1 x i64>> [#uses=0]
store <1 x i64> %call, <1 x i64>* @g_v1di
ret void
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 $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: t1:
Remove dead code. Fix associated test to use FileCheck. llvm-svn: 131424
2011-05-16 23:28:22 +02:00
; CHECK: callq
; CHECK-NEXT: movq _g_v1di
; CHECK-NEXT: movq %rax,
Support return of MMX values in 64-bit mode. llvm-svn: 65152
2009-02-20 21:43:02 +01:00
}
Only v1i16 (i.e. _m64) is returned via RAX / RDX. llvm-svn: 65313
2009-02-23 10:03:22 +01:00
declare <1 x i64> @return_v1di()
Be bug compatible with gcc by returning MMX values in RAX. llvm-svn: 65274
2009-02-22 09:05:12 +01:00
define <1 x i64> @t2() nounwind {
ret <1 x i64> <i64 1>
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$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 08:24:09 +02:00
; CHECK-LABEL: t2:
Remove dead code. Fix associated test to use FileCheck. llvm-svn: 131424
2011-05-16 23:28:22 +02:00
; CHECK: movl $1
; CHECK-NEXT: ret
Be bug compatible with gcc by returning MMX values in RAX. llvm-svn: 65274
2009-02-22 09:05:12 +01:00
}
Only v1i16 (i.e. _m64) is returned via RAX / RDX. llvm-svn: 65313
2009-02-23 10:03:22 +01:00
define <2 x i32> @t3() nounwind {
ret <2 x i32> <i32 1, i32 0>
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$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 08:24:09 +02:00
; CHECK-LABEL: t3:
Remove dead code. Fix associated test to use FileCheck. llvm-svn: 131424
2011-05-16 23:28:22 +02:00
; CHECK: movl $1
; CHECK: movd {{.*}}, %xmm0
Only v1i16 (i.e. _m64) is returned via RAX / RDX. llvm-svn: 65313
2009-02-23 10:03:22 +01:00
}
define double @t4() nounwind {
ret double bitcast (<2 x i32> <i32 1, i32 0> to double)
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$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 08:24:09 +02:00
; CHECK-LABEL: t4:
Remove dead code. Fix associated test to use FileCheck. llvm-svn: 131424
2011-05-16 23:28:22 +02:00
; CHECK: movl $1
; CHECK: movd {{.*}}, %xmm0
Only v1i16 (i.e. _m64) is returned via RAX / RDX. llvm-svn: 65313
2009-02-23 10:03:22 +01:00
}
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