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[llc] Add -pass-remarks-with-hotness

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Analogous to the code in opt, this enables hotness in opt-remarks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293113 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adam Nemet 2017-01-25 23:55:59 +00:00
parent 943b33c925
commit 3e4269822c
2 changed files with 24 additions and 7 deletions
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24
test/CodeGen/AArch64/arm64-spill-remarks.ll
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@ -1,19 +1,27 @@
; RUN: llc < %s -mtriple=arm64-apple-ios7.0 -aarch64-neon-syntax=apple -pass-remarks-missed=regalloc 2>&1 | FileCheck -check-prefix=REMARK %s
; RUN: llc < %s -mtriple=arm64-apple-ios7.0 -aarch64-neon-syntax=apple -pass-remarks-missed=regalloc -pass-remarks-with-hotness 2>&1 | FileCheck -check-prefix=HOTNESS %s
; RUN: llc < %s -mtriple=arm64-apple-ios7.0 -aarch64-neon-syntax=apple 2>&1 | FileCheck -check-prefix=NO_REMARK %s
; This has two nested loops, each with one value that has to be spilled and
; then reloaded.
; (loop3:)
; REMARK: remark: /tmp/kk.c:3:20: 1 spills 1 reloads generated in loop
; REMARK: remark: /tmp/kk.c:3:20: 1 spills 1 reloads generated in loop{{$}}
; (loop2:)
; REMARK: remark: /tmp/kk.c:2:20: 1 spills 1 reloads generated in loop
; REMARK: remark: /tmp/kk.c:2:20: 1 spills 1 reloads generated in loop{{$}}
; (loop:)
; REMARK: remark: /tmp/kk.c:1:20: 2 spills 2 reloads generated in loop
; REMARK: remark: /tmp/kk.c:1:20: 2 spills 2 reloads generated in loop{{$}}
; (loop3:)
; HOTNESS: remark: /tmp/kk.c:3:20: 1 spills 1 reloads generated in loop (hotness: 300)
; (loop2:)
; HOTNESS: remark: /tmp/kk.c:2:20: 1 spills 1 reloads generated in loop (hotness: 30000)
; (loop:)
; HOTNESS: remark: /tmp/kk.c:1:20: 2 spills 2 reloads generated in loop (hotness: 300)
; NO_REMARK-NOT: remark
define void @fpr128(<4 x float>* %p) nounwind ssp {
define void @fpr128(<4 x float>* %p) nounwind ssp !prof !11 {
entry:
br label %loop, !dbg !8
@ -26,13 +34,13 @@ loop2:
call void asm sideeffect "; inlineasm", "~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{q16},~{q17},~{q18},~{q19},~{q20},~{q21},~{q22},~{q23},~{q24},~{q25},~{q26},~{q27},~{q28},~{q29},~{q30},~{q31},~{x0},~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7},~{x8},~{x9},~{x10},~{x11},~{x12},~{x13},~{x14},~{x15},~{x16},~{x17},~{x18},~{x19},~{x20},~{x21},~{x22},~{x23},~{x24},~{x25},~{x26},~{x27},~{x28},~{fp},~{lr},~{sp},~{memory}"() nounwind
%j.2 = add i32 %j, 1
%c2 = icmp slt i32 %j.2, 100
br i1 %c2, label %loop2, label %end2
br i1 %c2, label %loop2, label %end2, !prof !12
end2:
call void asm sideeffect "; inlineasm", "~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{q16},~{q17},~{q18},~{q19},~{q20},~{q21},~{q22},~{q23},~{q24},~{q25},~{q26},~{q27},~{q28},~{q29},~{q30},~{q31},~{x0},~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7},~{x8},~{x9},~{x10},~{x11},~{x12},~{x13},~{x14},~{x15},~{x16},~{x17},~{x18},~{x19},~{x20},~{x21},~{x22},~{x23},~{x24},~{x25},~{x26},~{x27},~{x28},~{fp},~{lr},~{sp},~{memory}"() nounwind
%i.2 = add i32 %i, 1
%c = icmp slt i32 %i.2, 100
br i1 %c, label %loop, label %end
br i1 %c, label %loop, label %end, !prof !12
end:
br label %loop3
@ -42,7 +50,7 @@ loop3:
call void asm sideeffect "; inlineasm", "~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{q16},~{q17},~{q18},~{q19},~{q20},~{q21},~{q22},~{q23},~{q24},~{q25},~{q26},~{q27},~{q28},~{q29},~{q30},~{q31},~{x0},~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7},~{x8},~{x9},~{x10},~{x11},~{x12},~{x13},~{x14},~{x15},~{x16},~{x17},~{x18},~{x19},~{x20},~{x21},~{x22},~{x23},~{x24},~{x25},~{x26},~{x27},~{x28},~{fp},~{lr},~{sp},~{memory}"() nounwind
%k.2 = add i32 %k, 1
%c3 = icmp slt i32 %k.2, 100
br i1 %c3, label %loop3, label %end3, !dbg !10
br i1 %c3, label %loop3, label %end3, !dbg !10, !prof !12
end3:
ret void
@ -63,3 +71,5 @@ end3:
!8 = !DILocation(line: 1, column: 20, scope: !6)
!9 = !DILocation(line: 2, column: 20, scope: !6)
!10 = !DILocation(line: 3, column: 20, scope: !6)
!11 = !{!"function_entry_count", i64 3}
!12 = !{!"branch_weights", i32 99, i32 1}

7
tools/llc/llc.cpp
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@ -136,6 +136,11 @@ static cl::opt<std::string> StartAfter("start-after",
static cl::list<std::string> IncludeDirs("I", cl::desc("include search path"));
static cl::opt<bool> PassRemarksWithHotness(
"pass-remarks-with-hotness",
cl::desc("With PGO, include profile count in optimization remarks"),
cl::Hidden);
namespace {
static ManagedStatic<std::vector<std::string>> RunPassNames;
@ -284,6 +289,8 @@ int main(int argc, char **argv) {
// Set a diagnostic handler that doesn't exit on the first error
bool HasError = false;
Context.setDiagnosticHandler(DiagnosticHandler, &HasError);
if (PassRemarksWithHotness)
Context.setDiagnosticHotnessRequested(true);
// Compile the module TimeCompilations times to give better compile time
// metrics.