llvm-6502/test/CodeGen/X86/2009-12-01-EarlyClobberBug.ll

; RUN: llc < %s -mtriple=x86_64-apple-darwin -no-integrated-as | FileCheck %s
; pr5391

define void @t() nounwind ssp {
entry:
; CHECK-LABEL: t:
; CHECK: movl %ecx, %eax
; CHECK: %eax = foo (%eax, %ecx)
  %b = alloca i32                                 ; <i32*> [#uses=2]
  %a = alloca i32                                 ; <i32*> [#uses=1]
  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
  %0 = load i32* %b, align 4                      ; <i32> [#uses=1]
  %1 = load i32* %b, align 4                      ; <i32> [#uses=1]
  %asmtmp = call i32 asm "$0 = foo ($1, $2)", "=&{ax},%0,r,~{dirflag},~{fpsr},~{flags}"(i32 %0, i32 %1) nounwind ; <i32> [#uses=1]
  store i32 %asmtmp, i32* %a
  br label %return

return:                                           ; preds = %entry
  ret void
}

define void @t2() nounwind ssp {
entry:
; CHECK-LABEL: t2:
; CHECK: movl
; CHECK: [[D2:%e.x]] = foo
; CHECK: ([[D2]],
; CHECK-NOT: [[D2]]
; CHECK: )
  %b = alloca i32                                 ; <i32*> [#uses=2]
  %a = alloca i32                                 ; <i32*> [#uses=1]
  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
  %0 = load i32* %b, align 4                      ; <i32> [#uses=1]
  %1 = load i32* %b, align 4                      ; <i32> [#uses=1]
  %asmtmp = call i32 asm "$0 = foo ($1, $2)", "=&r,%0,r,~{dirflag},~{fpsr},~{flags}"(i32 %0, i32 %1) nounwind ; <i32> [#uses=1]
  store i32 %asmtmp, i32* %a
  br label %return

return:                                           ; preds = %entry
  ret void
}
Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call Summary: AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for targets with mature MC support. Such targets will always parse the inline assembly (even when emitting assembly). Targets without mature MC support continue to use EmitRawText() for assembly output. The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler to parse inline assembly (even when emitting assembly output). UseIntegratedAs is set to true for targets that consider any failure to parse valid assembly to be a bug. Target specific subclasses generally enable the integrated assembler in their constructor. The default value can be overridden with -no-integrated-as. All tests that rely on inline assembly supporting invalid assembly (for example, those that use mnemonics such as 'foo' or 'hello world') have been updated to disable the integrated assembler. Changes since review (and last commit attempt): - Fixed test failures that were missed due to configuration of local build. (fixes crash.ll and a couple others). - Fixed tests that happened to pass because the local build was on X86 (should fix 2007-12-17-InvokeAsm.ll) - mature-mc-support.ll's should no longer require all targets to be compiled. (should fix ARM and PPC buildbots) - Object output (-filetype=obj and similar) now forces the integrated assembler to be enabled regardless of default setting or -no-integrated-as. (should fix SystemZ buildbots) Reviewers: rafael Reviewed By: rafael CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2686 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201333 91177308-0d34-0410-b5e6-96231b3b80d8 2014-02-13 14:44:26 +00:00			`; RUN: llc < %s -mtriple=x86_64-apple-darwin -no-integrated-as \| FileCheck %s`
Fix PR5391: support early clobber physical register def tied with a use (ewwww) - A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber. - If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range. - Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90269 91177308-0d34-0410-b5e6-96231b3b80d8 2009-12-01 22:25:00 +00:00			`; pr5391`

			`define void @t() nounwind ssp {`
			`entry:`
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8 2013-07-14 06:24:09 +00:00			`; CHECK-LABEL: t:`
Fix PR5391: support early clobber physical register def tied with a use (ewwww) - A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber. - If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range. - Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90269 91177308-0d34-0410-b5e6-96231b3b80d8 2009-12-01 22:25:00 +00:00			`; CHECK: movl %ecx, %eax`
			`; CHECK: %eax = foo (%eax, %ecx)`
			`%b = alloca i32 ; <i32*> [#uses=2]`
			`%a = alloca i32 ; <i32*> [#uses=1]`
			`%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]`
			`%0 = load i32* %b, align 4 ; <i32> [#uses=1]`
			`%1 = load i32* %b, align 4 ; <i32> [#uses=1]`
			`%asmtmp = call i32 asm "$0 = foo ($1, $2)", "=&{ax},%0,r,~{dirflag},~{fpsr},~{flags}"(i32 %0, i32 %1) nounwind ; <i32> [#uses=1]`
			`store i32 %asmtmp, i32* %a`
			`br label %return`

			`return: ; preds = %entry`
			`ret void`
			`}`

			`define void @t2() nounwind ssp {`
			`entry:`
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8 2013-07-14 06:24:09 +00:00			`; CHECK-LABEL: t2:`
Be more aggressive about following hints. RAGreedy::tryAssign will now evict interference from the preferred register even when another register is free. To support this, add the EvictionCost struct that counts how many hints are broken by an eviction. We don't want to break one hint just to satisfy another. Rename canEvict to shouldEvict, and add the first bit of eviction policy that doesn't depend on spill weights: Always make room in the preferred register as long as the evictees can be split and aren't already assigned to their preferred register. Also make the CSR avoidance more accurate. When looking for a cheaper register it is OK to use a new volatile register. Only CSR aliases that have never been used before should be avoided. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134735 91177308-0d34-0410-b5e6-96231b3b80d8 2011-07-08 20:46:18 +00:00			`; CHECK: movl`
			`; CHECK: [[D2:%e.x]] = foo`
			`; CHECK: ([[D2]],`
			`; CHECK-NOT: [[D2]]`
			`; CHECK: )`
Fix PR5391: support early clobber physical register def tied with a use (ewwww) - A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber. - If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range. - Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90269 91177308-0d34-0410-b5e6-96231b3b80d8 2009-12-01 22:25:00 +00:00			`%b = alloca i32 ; <i32*> [#uses=2]`
			`%a = alloca i32 ; <i32*> [#uses=1]`
			`%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]`
			`%0 = load i32* %b, align 4 ; <i32> [#uses=1]`
			`%1 = load i32* %b, align 4 ; <i32> [#uses=1]`
			`%asmtmp = call i32 asm "$0 = foo ($1, $2)", "=&r,%0,r,~{dirflag},~{fpsr},~{flags}"(i32 %0, i32 %1) nounwind ; <i32> [#uses=1]`
			`store i32 %asmtmp, i32* %a`
			`br label %return`

			`return: ; preds = %entry`
			`ret void`
			`}`