| ; RUN: llvm-profdata merge %S/Inputs/indirectbr.proftext -o %t.profdata |
| ; RUN: opt < %s -pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S -enable-new-pm=0 | FileCheck %s --check-prefix=USE |
| ; New PM |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=false -pgo-test-profile-file=%t.profdata -S | opt -S -passes='print<branch-prob>' 2>&1 | FileCheck %s --check-prefix=BRANCHPROB |
| ; RUN: llvm-profdata merge %S/Inputs/indirectbr_entry.proftext -o %t2.profdata |
| ; RUN: opt < %s -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S -enable-new-pm=0 | FileCheck %s --check-prefix=USE |
| ; New PM |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S | FileCheck %s --check-prefix=USE |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t2.profdata -S | opt -S -passes='print<branch-prob>' 2>&1 | FileCheck %s --check-prefix=BRANCHPROB |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @foo.table = internal unnamed_addr constant [3 x i8*] [i8* blockaddress(@foo, %return), i8* blockaddress(@foo, %label2), i8* blockaddress(@foo, %label3)], align 16 |
| |
| define i32 @foo(i32 %i) { |
| entry: |
| %cmp = icmp ult i32 %i, 3 |
| br i1 %cmp, label %if.then, label %return |
| |
| if.then: |
| %idxprom = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds [3 x i8*], [3 x i8*]* @foo.table, i64 0, i64 %idxprom |
| %0 = load i8*, i8** %arrayidx, align 8 |
| indirectbr i8* %0, [label %return, label %label2, label %label3] |
| ; USE: indirectbr i8* %0, [label %return, label %label2, label %label3] |
| ; USE-SAME: !prof ![[BW_INDBR:[0-9]+]] |
| ; USE: ![[BW_INDBR]] = !{!"branch_weights", i32 63, i32 20, i32 5} |
| |
| label2: |
| br label %return |
| |
| label3: |
| br label %return |
| |
| return: |
| %retval.0 = phi i32 [ 3, %label3 ], [ 2, %label2 ], [ 0, %entry ], [ 1, %if.then ] |
| ret i32 %retval.0 |
| } |
| |
| ; BRANCHPROB: Printing analysis {{.*}} for function 'foo': |
| ; BRANCHPROB:---- Branch Probabilities ---- |
| ; BRANCHPROB: edge entry -> if.then probability is 0x37c32b17 / 0x80000000 = 43.56% |
| ; BRANCHPROB: edge entry -> return.clone probability is 0x483cd4e9 / 0x80000000 = 56.44% |
| ; BRANCHPROB: edge if.then -> return probability is 0x5ba2e8ba / 0x80000000 = 71.59% |
| ; BRANCHPROB: edge if.then -> label2 probability is 0x1d1745d1 / 0x80000000 = 22.73% |
| ; BRANCHPROB: edge if.then -> label3 probability is 0x0745d174 / 0x80000000 = 5.68% |
| ; BRANCHPROB: edge label2 -> return.clone probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] |
| ; BRANCHPROB: edge label3 -> return.clone probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] |
| ; BRANCHPROB: edge return -> .split probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] |
| ; BRANCHPROB: edge return.clone -> .split probability is 0x80000000 / 0x80000000 = 100.00% [HOT edge] |
| |
| |
| |