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[Stackmap] Materialize the jump address within the patchpoint noop slide.

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This patch moves the jump address materialization inside the noop slide. This
enables patching of the materialization itself or its complete removal. This
patch also adds the ability to define scratch registers that can be used safely
by the code called from the patchpoint intrinsic. At least one scratch register
is required, because that one is used for the materialization of the jump
address. This patch depends on D2009.

Differential Revision: http://llvm-reviews.chandlerc.com/D2074

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194306 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Juergen Ributzka
2013-11-09 01:51:33 +00:00
parent 999ffb6085
commit d4f5a61567
9 changed files with 86 additions and 57 deletions
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16
test/CodeGen/X86/stackmap.ll
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@@ -41,7 +41,7 @@
define void @constantargs() {
entry:
%0 = inttoptr i64 12345 to i8*
tail call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 1, i32 2, i8* %0, i32 0, i64 65535, i64 65536, i64 4294967295, i64 4294967296)
tail call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 1, i32 15, i8* %0, i32 0, i64 65535, i64 65536, i64 4294967295, i64 4294967296)
ret void
}
@@ -91,7 +91,7 @@ entry:
cold:
; OSR patchpoint with 12-byte nop-slide and 2 live vars.
%thunk = inttoptr i64 -559038737 to i8*
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 4, i32 12, i8* %thunk, i32 0, i64 %a, i64 %b)
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 4, i32 15, i8* %thunk, i32 0, i64 %a, i64 %b)
unreachable
ret:
ret void
@@ -108,7 +108,7 @@ ret:
define i64 @propertyRead(i64* %obj) {
entry:
%resolveRead = inttoptr i64 -559038737 to i8*
%result = call i64 (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i32 5, i32 12, i8* %resolveRead, i32 1, i64* %obj)
%result = call i64 (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i32 5, i32 15, i8* %resolveRead, i32 1, i64* %obj)
%add = add i64 %result, 3
ret i64 %add
}
@@ -124,7 +124,7 @@ entry:
define void @propertyWrite(i64 %dummy1, i64* %obj, i64 %dummy2, i64 %a) {
entry:
%resolveWrite = inttoptr i64 -559038737 to i8*
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 6, i32 12, i8* %resolveWrite, i32 2, i64* %obj, i64 %a)
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 6, i32 15, i8* %resolveWrite, i32 2, i64* %obj, i64 %a)
ret void
}
@@ -147,7 +147,7 @@ entry:
define void @jsVoidCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) {
entry:
%resolveCall = inttoptr i64 -559038737 to i8*
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 7, i32 12, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2)
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 7, i32 15, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2)
ret void
}
@@ -170,7 +170,7 @@ entry:
define i64 @jsIntCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) {
entry:
%resolveCall = inttoptr i64 -559038737 to i8*
%result = call i64 (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i32 8, i32 12, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2)
%result = call i64 (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i32 8, i32 15, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2)
%add = add i64 %result, 3
ret i64 %add
}
@@ -190,13 +190,13 @@ entry:
define void @spilledValue(i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16) {
entry:
%resolveCall = inttoptr i64 -559038737 to i8*
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 11, i32 12, i8* %resolveCall, i32 5, i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9)
call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 11, i32 15, i8* %resolveCall, i32 5, i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9)
; FIXME: The Spiller needs to be able to fold all rematted loads! This
; can be seen by adding %l15 to the stackmap.
; <rdar:/15202984> [JS] Ran out of registers during register allocation
; %resolveCall = inttoptr i64 -559038737 to i8*
; call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 12, i32 12, i8* %resolveCall, i32 5, i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16)
; call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 12, i32 15, i8* %resolveCall, i32 5, i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16)
ret void
}