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llvm-project/llvm/test/CodeGen/ARM/2012-10-18-PR14099-ByvalFra...

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ARM: Removed extra stack frame object for fixed byval arguments, VarArgsStyleRegisters invocation was reworked due to some improper usage in past. PR14099 also demonstrates it. llvm-svn: 166273
2012-10-19 16:23:06 +08:00
; RUN: llc < %s -mtriple=armv7-linux-gnueabi | FileCheck %s
%struct.s = type { [4 x i32] }
@v = constant %struct.s zeroinitializer;
declare void @f(%struct.s* %p);
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: t:
ARM: Removed extra stack frame object for fixed byval arguments, VarArgsStyleRegisters invocation was reworked due to some improper usage in past. PR14099 also demonstrates it. llvm-svn: 166273
2012-10-19 16:23:06 +08:00
define void @t(i32 %a, %struct.s* byval %s) nounwind {
entry:
; Here we need to only check proper start address of restored %s argument.
ARM: simplify and extend byval handling The main issue being fixed here is that APCS targets handling a "byval align N" parameter with N > 4 were miscounting what objects were where on the stack, leading to FrameLowering setting the frame pointer incorrectly and clobbering the stack. But byval handling had grown over many years, and had multiple layers of cruft trying to compensate for each other and calculate padding correctly. This only really needs to be done once, in the HandleByVal function. Elsewhere should just do what it's told by that call. I also stripped out unnecessary APCS/AAPCS distinctions (now that Clang emits byvals with the correct C ABI alignment), which simplified HandleByVal. rdar://20095672 llvm-svn: 231959
2015-03-12 02:54:22 +08:00
; CHECK: sub sp, sp, #12
ARM: Removed extra stack frame object for fixed byval arguments, VarArgsStyleRegisters invocation was reworked due to some improper usage in past. PR14099 also demonstrates it. llvm-svn: 166273
2012-10-19 16:23:06 +08:00
; CHECK: push {r11, lr}
ARM: simplify and extend byval handling The main issue being fixed here is that APCS targets handling a "byval align N" parameter with N > 4 were miscounting what objects were where on the stack, leading to FrameLowering setting the frame pointer incorrectly and clobbering the stack. But byval handling had grown over many years, and had multiple layers of cruft trying to compensate for each other and calculate padding correctly. This only really needs to be done once, in the HandleByVal function. Elsewhere should just do what it's told by that call. I also stripped out unnecessary APCS/AAPCS distinctions (now that Clang emits byvals with the correct C ABI alignment), which simplified HandleByVal. rdar://20095672 llvm-svn: 231959
2015-03-12 02:54:22 +08:00
; CHECK: sub sp, sp, #4
ARM: Removed extra stack frame object for fixed byval arguments, VarArgsStyleRegisters invocation was reworked due to some improper usage in past. PR14099 also demonstrates it. llvm-svn: 166273
2012-10-19 16:23:06 +08:00
; CHECK: add r0, sp, #12
; CHECK: stm r0, {r1, r2, r3}
; CHECK: add r0, sp, #12
; CHECK-NEXT: bl f
call void @f(%struct.s* %s)
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 14:24:09 +08:00
; CHECK-LABEL: caller:
ARM: Removed extra stack frame object for fixed byval arguments, VarArgsStyleRegisters invocation was reworked due to some improper usage in past. PR14099 also demonstrates it. llvm-svn: 166273
2012-10-19 16:23:06 +08:00
define void @caller() {
[ARM] Make -mcpu=generic schedule for an in-order core (Cortex-A8). The benchmarking summarized in http://lists.llvm.org/pipermail/llvm-dev/2017-May/113525.html showed this is beneficial for a wide range of cores. As is to be expected, quite a few small adaptations are needed to the regressions tests, as the difference in scheduling results in: - Quite a few small instruction schedule differences. - A few changes in register allocation decisions caused by different instruction schedules. - A few changes in IfConversion decisions, due to a difference in instruction schedule and/or the estimated cost of a branch mispredict. llvm-svn: 306514
2017-06-28 15:07:03 +08:00
; CHECK: ldm r{{[0-9]+}}, {r1, r2, r3}
ARM: Removed extra stack frame object for fixed byval arguments, VarArgsStyleRegisters invocation was reworked due to some improper usage in past. PR14099 also demonstrates it. llvm-svn: 166273
2012-10-19 16:23:06 +08:00
call void @t(i32 0, %struct.s* @v);
ret void
}