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llvm-mirror/test/CodeGen/X86/patchpoint.ll
Juergen Ributzka a748d55906 [Stackmap] Materialize the jump address within the patchpoint noop slide.
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

llvm-svn: 194306
2013-11-09 01:51:33 +00:00

85 lines
3.5 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
; Trivial patchpoint codegen
;
define i64 @trivial_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: trivial_patchpoint_codegen:
; CHECK: movabsq $-559038736, %r11
; CHECK-NEXT: callq *%r11
; CHECK-NEXT: nop
; CHECK: movq %rax, %[[REG:r.+]]
; CHECK: callq *%r11
; CHECK-NEXT: nop
; CHECK: movq %[[REG]], %rax
; CHECK: ret
%resolveCall2 = inttoptr i64 -559038736 to i8*
%result = tail call i64 (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i32 2, i32 15, i8* %resolveCall2, i32 4, i64 %p1, i64 %p2, i64 %p3, i64 %p4)
%resolveCall3 = inttoptr i64 -559038737 to i8*
tail call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 3, i32 15, i8* %resolveCall3, i32 2, i64 %p1, i64 %result)
ret i64 %result
}
; Caller frame metadata with stackmaps. This should not be optimized
; as a leaf function.
;
; CHECK-LABEL: caller_meta_leaf
; CHECK: subq $24, %rsp
; CHECK: Ltmp
; CHECK: addq $24, %rsp
; CHECK: ret
define void @caller_meta_leaf() {
entry:
%metadata = alloca i64, i32 3, align 8
store i64 11, i64* %metadata
store i64 12, i64* %metadata
store i64 13, i64* %metadata
call void (i32, i32, ...)* @llvm.experimental.stackmap(i32 4, i32 0, i64* %metadata)
ret void
}
; Test the webkit_jscc calling convention.
; Two arguments will be pushed on the stack.
; Return value in $rax.
define void @jscall_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: jscall_patchpoint_codegen:
; CHECK: Ltmp
; CHECK: movq %r{{.+}}, 8(%rsp)
; CHECK: movq %r{{.+}}, (%rsp)
; CHECK: Ltmp
; CHECK-NEXT: movabsq $-559038736, %r11
; CHECK-NEXT: callq *%r11
; CHECK: movq %rax, 8(%rsp)
; CHECK: callq
%resolveCall2 = inttoptr i64 -559038736 to i8*
%result = tail call webkit_jscc i64 (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i32 5, i32 15, i8* %resolveCall2, i32 2, i64 %p1, i64 %p2)
%resolveCall3 = inttoptr i64 -559038737 to i8*
tail call webkit_jscc void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 6, i32 15, i8* %resolveCall3, i32 2, i64 %p1, i64 %result)
ret void
}
; Test patchpoints reusing the same TargetConstant.
; <rdar:15390785> Assertion failed: (CI.getNumArgOperands() >= NumArgs + 4)
; There is no way to verify this, since it depends on memory allocation.
; But I think it's useful to include as a working example.
define i64 @testLowerConstant(i64 %arg, i64 %tmp2, i64 %tmp10, i64* %tmp33, i64 %tmp79) {
entry:
%tmp80 = add i64 %tmp79, -16
%tmp81 = inttoptr i64 %tmp80 to i64*
%tmp82 = load i64* %tmp81, align 8
tail call void (i32, i32, ...)* @llvm.experimental.stackmap(i32 14, i32 5, i64 %arg, i64 %tmp2, i64 %tmp10, i64 %tmp82)
tail call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 15, i32 30, i8* null, i32 3, i64 %arg, i64 %tmp10, i64 %tmp82)
%tmp83 = load i64* %tmp33, align 8
%tmp84 = add i64 %tmp83, -24
%tmp85 = inttoptr i64 %tmp84 to i64*
%tmp86 = load i64* %tmp85, align 8
tail call void (i32, i32, ...)* @llvm.experimental.stackmap(i32 17, i32 5, i64 %arg, i64 %tmp10, i64 %tmp86)
tail call void (i32, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i32 18, i32 30, i8* null, i32 3, i64 %arg, i64 %tmp10, i64 %tmp86)
ret i64 10
}
declare void @llvm.experimental.stackmap(i32, i32, ...)
declare void @llvm.experimental.patchpoint.void(i32, i32, i8*, i32, ...)
declare i64 @llvm.experimental.patchpoint.i64(i32, i32, i8*, i32, ...)