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35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
; RUN: llvm-profdata merge %S/Inputs/fix_entry_count.proftext -o %t.profdata
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; RUN: opt < %s -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
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; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @test_simple_for(i32 %n) {
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; USE: define i32 @test_simple_for(i32 %n)
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; USE-SAME: !prof ![[ENTRY_COUNT:[0-9]*]]
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entry:
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br label %for.cond
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for.cond:
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%i = phi i32 [ 0, %entry ], [ %inc1, %for.inc ]
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%sum = phi i32 [ 1, %entry ], [ %inc, %for.inc ]
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%cmp = icmp slt i32 %i, %n
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br i1 %cmp, label %for.body, label %for.end
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; USE: br i1 %cmp, label %for.body, label %for.end
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; USE-SAME: !prof ![[BW_FOR_COND:[0-9]+]]
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for.body:
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%inc = add nsw i32 %sum, 1
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br label %for.inc
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for.inc:
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%inc1 = add nsw i32 %i, 1
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br label %for.cond
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for.end:
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ret i32 %sum
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}
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; USE: ![[ENTRY_COUNT]] = !{!"function_entry_count", i64 1}
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; USE: ![[BW_FOR_COND]] = !{!"branch_weights", i32 96, i32 1}
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