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llvm-mirror/test/CodeGen/PowerPC/ppc64-stackmap.ll
Sanjoy Das 58149dbd85 [Stackmap] Added callsite counts to emitted function information. 
Summary:
It was previously not possible for tools to use solely the stackmap
information emitted to reconstruct the return addresses of callsites in
the map, which is necessary to use the information to walk a stack. This
patch adds per-function callsite counts when emitting the stackmap
section in order to resolve the problem. Note that this slightly alters
the stackmap format, so external tools parsing these maps will need to
be updated.

**Problem Details:**
Records only store their offset from the beginning of the function they
belong to. While these records and the functions are output in program
order, it is not possible to determine where the end of one function's
records are without the callsite count when processing the records to
compute return addresses.

Patch by Kavon Farvardin!

Reviewers: atrick, ributzka, sanjoy

Subscribers: nemanjai

Differential Revision: https://reviews.llvm.org/D23487

llvm-svn: 281532
2016-09-14 20:22:03 +00:00

335 lines
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; RUN: llc < %s | FileCheck %s
;
; Note: Print verbose stackmaps using -debug-only=stackmaps.
; We are not getting the correct stack alignment when cross compiling for arm64.
; So specify a datalayout here.
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
; CHECK-LABEL: constantargs:
; CHECK: {{^}}.L[[constantargs_BEGIN:.*]]:{{$}}
; CHECK-LABEL: osrinline:
; CHECK: {{^}}.L[[osrinline_BEGIN:.*]]:{{$}}
; CHECK-LABEL: osrcold:
; CHECK: {{^}}.L[[osrcold_BEGIN:.*]]:{{$}}
; CHECK-LABEL: propertyRead:
; CHECK: {{^}}.L[[propertyRead_BEGIN:.*]]:{{$}}
; CHECK-LABEL: propertyWrite:
; CHECK: {{^}}.L[[propertyWrite_BEGIN:.*]]:{{$}}
; CHECK-LABEL: jsVoidCall:
; CHECK: {{^}}.L[[jsVoidCall_BEGIN:.*]]:{{$}}
; CHECK-LABEL: jsIntCall:
; CHECK: {{^}}.L[[jsIntCall_BEGIN:.*]]:{{$}}
; CHECK-LABEL: spilledValue:
; CHECK: {{^}}.L[[spilledValue_BEGIN:.*]]:{{$}}
; CHECK-LABEL: spilledStackMapValue:
; CHECK: {{^}}.L[[spilledStackMapValue_BEGIN:.*]]:{{$}}
; CHECK-LABEL: liveConstant:
; CHECK: {{^}}.L[[liveConstant_BEGIN:.*]]:{{$}}
; CHECK-LABEL: clobberLR:
; CHECK: {{^}}.L[[clobberLR_BEGIN:.*]]:{{$}}
; CHECK-LABEL: .section .llvm_stackmaps
; CHECK-NEXT: __LLVM_StackMaps:
; Header
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .short 0
; Num Functions
; CHECK-NEXT: .long 11
; Num LargeConstants
; CHECK-NEXT: .long 2
; Num Callsites
; CHECK-NEXT: .long 11
; Functions and stack size
; CHECK-NEXT: .quad constantargs
; CHECK-NEXT: .quad 128
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad osrinline
; CHECK-NEXT: .quad 144
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad osrcold
; CHECK-NEXT: .quad 128
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad propertyRead
; CHECK-NEXT: .quad 128
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad propertyWrite
; CHECK-NEXT: .quad 128
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad jsVoidCall
; CHECK-NEXT: .quad 128
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad jsIntCall
; CHECK-NEXT: .quad 128
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad spilledValue
; CHECK-NEXT: .quad 304
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad spilledStackMapValue
; CHECK-NEXT: .quad 224
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad liveConstant
; CHECK-NEXT: .quad 64
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .quad clobberLR
; CHECK-NEXT: .quad 208
; CHECK-NEXT: .quad 1
; Num LargeConstants
; CHECK-NEXT: .quad 4294967295
; CHECK-NEXT: .quad 4294967296
; Constant arguments
;
; CHECK-NEXT: .quad 1
; CHECK-NEXT: .long .L{{.*}}-.L[[constantargs_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 4
; SmallConstant
; CHECK-NEXT: .byte 4
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 0
; CHECK-NEXT: .long 65535
; SmallConstant
; CHECK-NEXT: .byte 4
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 0
; CHECK-NEXT: .long 65536
; SmallConstant
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 0
; CHECK-NEXT: .long 0
; LargeConstant at index 0
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 0
; CHECK-NEXT: .long 1
define void @constantargs() {
entry:
%0 = inttoptr i64 244837814094590 to i8*
tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 1, i32 40, i8* %0, i32 0, i64 65535, i64 65536, i64 4294967295, i64 4294967296)
ret void
}
; Inline OSR Exit
;
; CHECK: .long .L{{.*}}-.L[[osrinline_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 2
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
define void @osrinline(i64 %a, i64 %b) {
entry:
; Runtime void->void call.
call void inttoptr (i64 244837814094590 to void ()*)()
; Followed by inline OSR patchpoint with 12-byte shadow and 2 live vars.
call void (i64, i32, ...) @llvm.experimental.stackmap(i64 3, i32 12, i64 %a, i64 %b)
ret void
}
; Cold OSR Exit
;
; 2 live variables in register.
;
; CHECK: .long .L{{.*}}-.L[[osrcold_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 2
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
define void @osrcold(i64 %a, i64 %b) {
entry:
%test = icmp slt i64 %a, %b
br i1 %test, label %ret, label %cold
cold:
; OSR patchpoint with 12-byte nop-slide and 2 live vars.
%thunk = inttoptr i64 244837814094590 to i8*
call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4, i32 40, i8* %thunk, i32 0, i64 %a, i64 %b)
unreachable
ret:
ret void
}
; Property Read
; CHECK: .long .L{{.*}}-.L[[propertyRead_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 0
;
; FIXME: There are currently no stackmap entries. After moving to
; AnyRegCC, we will have entries for the object and return value.
define i64 @propertyRead(i64* %obj) {
entry:
%resolveRead = inttoptr i64 244837814094590 to i8*
%result = call i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 5, i32 40, i8* %resolveRead, i32 1, i64* %obj)
%add = add i64 %result, 3
ret i64 %add
}
; Property Write
; CHECK: .long .L{{.*}}-.L[[propertyWrite_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 2
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
define void @propertyWrite(i64 %dummy1, i64* %obj, i64 %dummy2, i64 %a) {
entry:
%resolveWrite = inttoptr i64 244837814094590 to i8*
call anyregcc void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 6, i32 40, i8* %resolveWrite, i32 2, i64* %obj, i64 %a)
ret void
}
; Void JS Call
;
; 2 live variables in registers.
;
; CHECK: .long .L{{.*}}-.L[[jsVoidCall_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 2
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
define void @jsVoidCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) {
entry:
%resolveCall = inttoptr i64 244837814094590 to i8*
call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 7, i32 40, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2)
ret void
}
; i64 JS Call
;
; 2 live variables in registers.
;
; CHECK: .long .L{{.*}}-.L[[jsIntCall_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 2
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short {{[0-9]+}}
; CHECK-NEXT: .long 0
define i64 @jsIntCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) {
entry:
%resolveCall = inttoptr i64 244837814094590 to i8*
%result = call i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 8, i32 40, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2)
%add = add i64 %result, 3
ret i64 %add
}
; Spilled stack map values.
;
; Verify 28 stack map entries.
;
; CHECK: .long .L{{.*}}-.L[[spilledValue_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 28
;
; Check that at least one is a spilled entry from r31.
; Location: Indirect FP + ...
; CHECK: .byte 3
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 31
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, i64 %l17, i64 %l18, i64 %l19, i64 %l20, i64 %l21, i64 %l22, i64 %l23, i64 %l24, i64 %l25, i64 %l26, i64 %l27) {
entry:
call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 11, i32 40, i8* null, 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, i64 %l17, i64 %l18, i64 %l19, i64 %l20, i64 %l21, i64 %l22, i64 %l23, i64 %l24, i64 %l25, i64 %l26, i64 %l27)
ret void
}
; Spilled stack map values.
;
; Verify 30 stack map entries.
;
; CHECK: .long .L{{.*}}-.L[[spilledStackMapValue_BEGIN]]
; CHECK-NEXT: .short 0
; CHECK-NEXT: .short 30
;
; Check that at least one is a spilled entry from r31.
; Location: Indirect FP + ...
; CHECK: .byte 3
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 31
define webkit_jscc void @spilledStackMapValue(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, i64 %l17, i64 %l18, i64 %l19, i64 %l20, i64 %l21, i64 %l22, i64 %l23, i64 %l24, i64 %l25, i64 %l26, i64 %l27, i64 %l28, i64 %l29) {
entry:
call void (i64, i32, ...) @llvm.experimental.stackmap(i64 12, i32 16, 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, i64 %l17, i64 %l18, i64 %l19, i64 %l20, i64 %l21, i64 %l22, i64 %l23, i64 %l24, i64 %l25, i64 %l26, i64 %l27, i64 %l28, i64 %l29)
ret void
}
; Map a constant value.
;
; CHECK: .long .L{{.*}}-.L[[liveConstant_BEGIN]]
; CHECK-NEXT: .short 0
; 1 location
; CHECK-NEXT: .short 1
; Loc 0: SmallConstant
; CHECK-NEXT: .byte 4
; CHECK-NEXT: .byte 8
; CHECK-NEXT: .short 0
; CHECK-NEXT: .long 33
define void @liveConstant() {
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 15, i32 8, i32 33)
ret void
}
; Map a value when LR is the only free register.
;
; CHECK: .long .L{{.*}}-.L[[clobberLR_BEGIN]]
; CHECK-NEXT: .short 0
; 1 location
; CHECK-NEXT: .short 1
; Loc 0: Indirect FP (r31) - offset
; CHECK-NEXT: .byte 3
; CHECK-NEXT: .byte 4
; CHECK-NEXT: .short 31
; CHECK-NEXT: .long {{[0-9]+}}
define void @clobberLR(i32 %a) {
tail call void asm sideeffect "nop", "~{r0},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28},~{r29},~{r30},~{r31}"() nounwind
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 16, i32 8, i32 %a)
ret void
}
declare void @llvm.experimental.stackmap(i64, i32, ...)
declare void @llvm.experimental.patchpoint.void(i64, i32, i8*, i32, ...)
declare i64 @llvm.experimental.patchpoint.i64(i64, i32, i8*, i32, ...)
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