351099022a
In r292621, the recommit fixes a bug related with live interval update after the partial redundent copy is moved. This recommit solves an additional bug related to the lack of update of subranges. The original patch is to solve the performance problem described in PR27827. Register coalescing sometimes cannot remove a copy because of interference. But if we can find a reverse copy in one of the predecessor block of the copy, the copy is partially redundent and we may remove the copy partially by moving it to the predecessor block without the reverse copy. Differential Revision: https://reviews.llvm.org/D28585 Re-apply r292621 Revert "Revert rL292621. Caused some internal build bot failures in apple." This reverts commit r292984. Original patch: Wei Mi <wmi@google.com> Subrange fix: Mostly Matthias Braun <matze@braunis.de> llvm-svn: 293353
282 lines
12 KiB
LLVM
282 lines
12 KiB
LLVM
; RUN: llc -regalloc=greedy -verify-coalescing -mtriple=x86_64-unknown-linux-gnu < %s
|
|
; Check the live range is updated properly after register coalescing.
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
@.str = internal unnamed_addr constant { [17 x i8], [47 x i8] } { [17 x i8] c"0123456789ABCDEF\00", [47 x i8] zeroinitializer }, align 32
|
|
@b = common local_unnamed_addr global i32 0, align 4
|
|
@a = common local_unnamed_addr global i32* null, align 8
|
|
@__sancov_gen_cov = private global [9 x i32] zeroinitializer
|
|
|
|
; Function Attrs: nounwind sanitize_address
|
|
define void @fn2(i8* %p1) local_unnamed_addr #0 {
|
|
entry:
|
|
%0 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 4) to i32*) monotonic, align 4
|
|
%1 = icmp sge i32 0, %0
|
|
br i1 %1, label %2, label %3
|
|
|
|
; <label>:2: ; preds = %entry
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 4) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %3
|
|
|
|
; <label>:3: ; preds = %entry, %2
|
|
br label %while.cond.outer
|
|
|
|
while.cond.outer: ; preds = %75, %3
|
|
%e.0.ph = phi i8* [ %e.058, %75 ], [ undef, %3 ]
|
|
%c.0.ph = phi i32* [ %c.059, %75 ], [ undef, %3 ]
|
|
%p1.addr.0.ph = phi i8* [ %incdec.ptr60, %75 ], [ %p1, %3 ]
|
|
%4 = ptrtoint i8* %p1.addr.0.ph to i64
|
|
%5 = lshr i64 %4, 3
|
|
%6 = add i64 %5, 2147450880
|
|
%7 = inttoptr i64 %6 to i8*
|
|
%8 = load i8, i8* %7
|
|
%9 = icmp ne i8 %8, 0
|
|
br i1 %9, label %10, label %15
|
|
|
|
; <label>:10: ; preds = %while.cond.outer
|
|
%11 = and i64 %4, 7
|
|
%12 = trunc i64 %11 to i8
|
|
%13 = icmp sge i8 %12, %8
|
|
br i1 %13, label %14, label %15
|
|
|
|
; <label>:14: ; preds = %10
|
|
call void @__asan_report_load1(i64 %4)
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:15: ; preds = %10, %while.cond.outer
|
|
%16 = load i8, i8* %p1.addr.0.ph, align 1
|
|
call void @__sanitizer_cov_trace_cmp1(i8 %16, i8 0)
|
|
%cmp57 = icmp eq i8 %16, 0
|
|
br i1 %cmp57, label %while.cond.outer.enoent.loopexit96_crit_edge, label %while.body.preheader
|
|
|
|
while.cond.outer.enoent.loopexit96_crit_edge: ; preds = %15
|
|
%17 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 8) to i32*) monotonic, align 4
|
|
%18 = icmp sge i32 0, %17
|
|
br i1 %18, label %19, label %20
|
|
|
|
; <label>:19: ; preds = %while.cond.outer.enoent.loopexit96_crit_edge
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 8) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %20
|
|
|
|
; <label>:20: ; preds = %while.cond.outer.enoent.loopexit96_crit_edge, %19
|
|
br label %enoent.loopexit96
|
|
|
|
while.body.preheader: ; preds = %15
|
|
br label %while.body
|
|
|
|
while.body: ; preds = %56, %while.body.preheader
|
|
%21 = phi i8 [ %52, %56 ], [ %16, %while.body.preheader ]
|
|
%p1.addr.0.ph.pn = phi i8* [ %incdec.ptr60, %56 ], [ %p1.addr.0.ph, %while.body.preheader ]
|
|
%c.059 = phi i32* [ %incdec.ptr18, %56 ], [ %c.0.ph, %while.body.preheader ]
|
|
%e.058 = phi i8* [ %incdec.ptr60, %56 ], [ %e.0.ph, %while.body.preheader ]
|
|
%incdec.ptr60 = getelementptr inbounds i8, i8* %p1.addr.0.ph.pn, i64 1
|
|
%conv = sext i8 %21 to i32
|
|
%call = tail call i32 (i8*, i32, ...) bitcast (i32 (...)* @fn3 to i32 (i8*, i32, ...)*)(i8* getelementptr inbounds ({ [17 x i8], [47 x i8] }, { [17 x i8], [47 x i8] }* @.str, i32 0, i32 0, i64 0), i32 %conv) #2
|
|
call void @__sanitizer_cov_trace_cmp4(i32 %call, i32 0)
|
|
%tobool = icmp eq i32 %call, 0
|
|
br i1 %tobool, label %if.end5, label %cleanup
|
|
|
|
if.end5: ; preds = %while.body
|
|
call void @__sanitizer_cov_trace_cmp1(i8 %21, i8 58)
|
|
%cmp6 = icmp eq i8 %21, 58
|
|
br i1 %cmp6, label %if.end14, label %cleanup.thread40
|
|
|
|
if.end14: ; preds = %if.end5
|
|
%22 = load i8, i8* inttoptr (i64 add (i64 lshr (i64 ptrtoint (i32** @a to i64), i64 3), i64 2147450880) to i8*)
|
|
%23 = icmp ne i8 %22, 0
|
|
br i1 %23, label %24, label %25
|
|
|
|
; <label>:24: ; preds = %if.end14
|
|
call void @__asan_report_load8(i64 ptrtoint (i32** @a to i64))
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:25: ; preds = %if.end14
|
|
%26 = load i32*, i32** @a, align 8
|
|
%tobool15 = icmp eq i32* %26, null
|
|
br i1 %tobool15, label %cleanup.thread39, label %cleanup23.loopexit
|
|
|
|
cleanup.thread39: ; preds = %25
|
|
%incdec.ptr18 = getelementptr inbounds i32, i32* %c.059, i64 1
|
|
%27 = ptrtoint i32* %c.059 to i64
|
|
%28 = lshr i64 %27, 3
|
|
%29 = add i64 %28, 2147450880
|
|
%30 = inttoptr i64 %29 to i8*
|
|
%31 = load i8, i8* %30
|
|
%32 = icmp ne i8 %31, 0
|
|
br i1 %32, label %33, label %39
|
|
|
|
; <label>:33: ; preds = %cleanup.thread39
|
|
%34 = and i64 %27, 7
|
|
%35 = add i64 %34, 3
|
|
%36 = trunc i64 %35 to i8
|
|
%37 = icmp sge i8 %36, %31
|
|
br i1 %37, label %38, label %39
|
|
|
|
; <label>:38: ; preds = %33
|
|
call void @__asan_report_store4(i64 %27)
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:39: ; preds = %33, %cleanup.thread39
|
|
store i32 0, i32* %c.059, align 4
|
|
%40 = ptrtoint i8* %incdec.ptr60 to i64
|
|
%41 = lshr i64 %40, 3
|
|
%42 = add i64 %41, 2147450880
|
|
%43 = inttoptr i64 %42 to i8*
|
|
%44 = load i8, i8* %43
|
|
%45 = icmp ne i8 %44, 0
|
|
br i1 %45, label %46, label %51
|
|
|
|
; <label>:46: ; preds = %39
|
|
%47 = and i64 %40, 7
|
|
%48 = trunc i64 %47 to i8
|
|
%49 = icmp sge i8 %48, %44
|
|
br i1 %49, label %50, label %51
|
|
|
|
; <label>:50: ; preds = %46
|
|
call void @__asan_report_load1(i64 %40)
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:51: ; preds = %46, %39
|
|
%52 = load i8, i8* %incdec.ptr60, align 1
|
|
call void @__sanitizer_cov_trace_cmp1(i8 %52, i8 0)
|
|
%cmp = icmp eq i8 %52, 0
|
|
br i1 %cmp, label %enoent.loopexit, label %cleanup.thread39.while.body_crit_edge
|
|
|
|
cleanup.thread39.while.body_crit_edge: ; preds = %51
|
|
%53 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 12) to i32*) monotonic, align 4
|
|
%54 = icmp sge i32 0, %53
|
|
br i1 %54, label %55, label %56
|
|
|
|
; <label>:55: ; preds = %cleanup.thread39.while.body_crit_edge
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 12) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %56
|
|
|
|
; <label>:56: ; preds = %cleanup.thread39.while.body_crit_edge, %55
|
|
br label %while.body
|
|
|
|
cleanup.thread40: ; preds = %if.end5
|
|
%57 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 16) to i32*) monotonic, align 4
|
|
%58 = icmp sge i32 0, %57
|
|
br i1 %58, label %59, label %60
|
|
|
|
; <label>:59: ; preds = %cleanup.thread40
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 16) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %60
|
|
|
|
; <label>:60: ; preds = %cleanup.thread40, %59
|
|
%call20 = tail call i32 (i8*, ...) bitcast (i32 (...)* @fn4 to i32 (i8*, ...)*)(i8* %e.058) #2
|
|
br label %enoent
|
|
|
|
cleanup: ; preds = %while.body
|
|
%61 = load i8, i8* inttoptr (i64 add (i64 lshr (i64 ptrtoint (i32* @b to i64), i64 3), i64 2147450880) to i8*)
|
|
%62 = icmp ne i8 %61, 0
|
|
br i1 %62, label %63, label %66
|
|
|
|
; <label>:63: ; preds = %cleanup
|
|
%64 = icmp sge i8 trunc (i64 add (i64 and (i64 ptrtoint (i32* @b to i64), i64 7), i64 3) to i8), %61
|
|
br i1 %64, label %65, label %66
|
|
|
|
; <label>:65: ; preds = %63
|
|
call void @__asan_report_load4(i64 ptrtoint (i32* @b to i64))
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:66: ; preds = %63, %cleanup
|
|
%67 = load i32, i32* @b, align 4
|
|
call void @__sanitizer_cov_trace_cmp4(i32 %67, i32 0)
|
|
%tobool3 = icmp eq i32 %67, 0
|
|
br i1 %tobool3, label %cleanup.while.cond.outer_crit_edge, label %cleanup.enoent.loopexit96_crit_edge
|
|
|
|
cleanup.enoent.loopexit96_crit_edge: ; preds = %66
|
|
%68 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 20) to i32*) monotonic, align 4
|
|
%69 = icmp sge i32 0, %68
|
|
br i1 %69, label %70, label %71
|
|
|
|
; <label>:70: ; preds = %cleanup.enoent.loopexit96_crit_edge
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 20) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %71
|
|
|
|
; <label>:71: ; preds = %cleanup.enoent.loopexit96_crit_edge, %70
|
|
br label %enoent.loopexit96
|
|
|
|
cleanup.while.cond.outer_crit_edge: ; preds = %66
|
|
%72 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 24) to i32*) monotonic, align 4
|
|
%73 = icmp sge i32 0, %72
|
|
br i1 %73, label %74, label %75
|
|
|
|
; <label>:74: ; preds = %cleanup.while.cond.outer_crit_edge
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 24) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %75
|
|
|
|
; <label>:75: ; preds = %cleanup.while.cond.outer_crit_edge, %74
|
|
br label %while.cond.outer
|
|
|
|
enoent.loopexit: ; preds = %51
|
|
%76 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 28) to i32*) monotonic, align 4
|
|
%77 = icmp sge i32 0, %76
|
|
br i1 %77, label %78, label %79
|
|
|
|
; <label>:78: ; preds = %enoent.loopexit
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 28) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %79
|
|
|
|
; <label>:79: ; preds = %enoent.loopexit, %78
|
|
br label %enoent
|
|
|
|
enoent.loopexit96: ; preds = %71, %20
|
|
br label %enoent
|
|
|
|
enoent: ; preds = %enoent.loopexit96, %79, %60
|
|
%call22 = tail call i32* (...) @fn1() #2
|
|
br label %cleanup23
|
|
|
|
cleanup23.loopexit: ; preds = %25
|
|
%80 = load atomic i32, i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 32) to i32*) monotonic, align 4
|
|
%81 = icmp sge i32 0, %80
|
|
br i1 %81, label %82, label %83
|
|
|
|
; <label>:82: ; preds = %cleanup23.loopexit
|
|
call void @__sanitizer_cov(i32* inttoptr (i64 add (i64 ptrtoint ([9 x i32]* @__sancov_gen_cov to i64), i64 32) to i32*))
|
|
call void asm sideeffect "", ""()
|
|
br label %83
|
|
|
|
; <label>:83: ; preds = %cleanup23.loopexit, %82
|
|
br label %cleanup23
|
|
|
|
cleanup23: ; preds = %83, %enoent
|
|
ret void
|
|
}
|
|
|
|
declare i32 @fn3(...) local_unnamed_addr #1
|
|
|
|
declare i32 @fn4(...) local_unnamed_addr #1
|
|
|
|
declare i32* @fn1(...) local_unnamed_addr #1
|
|
|
|
declare void @__sanitizer_cov(i32*)
|
|
|
|
declare void @__sanitizer_cov_trace_cmp1(i8, i8)
|
|
|
|
declare void @__sanitizer_cov_trace_cmp4(i32, i32)
|
|
|
|
declare void @__asan_report_load1(i64)
|
|
|
|
declare void @__asan_report_load4(i64)
|
|
|
|
declare void @__asan_report_load8(i64)
|
|
|
|
declare void @__asan_report_store4(i64)
|
|
|