30 lines
848 B
LLVM
30 lines
848 B
LLVM
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; RUN: opt -passes=pgo-instr-gen -S 2>&1 < %s | FileCheck %s
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;
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; RUN: llvm-profdata merge %S/Inputs/callbr.proftext -o %t.profdata
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; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
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define i32 @a() {
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entry:
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; CHECK-NOT: ptrtoint ptr asm sideeffect
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; CHECK: callbr void asm sideeffect
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%retval = alloca i32, align 4
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callbr void asm sideeffect "", "!i,~{dirflag},~{fpsr},~{flags}"() #1
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to label %asm.fallthrough [label %b]
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asm.fallthrough:
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br label %b
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b:
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%0 = load i32, ptr %retval, align 4
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ret i32 %0
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}
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; USE-LABEL: @a
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; USE-SAME: !prof ![[BW_ENTRY:[0-9]+]]
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; USE: callbr void asm sideeffect
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; USE: to label
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; USE-SAME: !prof ![[BW_CALLBR:[0-9]+]]
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; USE ![[BW_ENTRY]] = !{!"function_entry_count", i64 100}
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; USE ![[BW_CALLBR]] = !{!"branch_weights", i32 80, i32 20}
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