123 lines
3.1 KiB
LLVM
123 lines
3.1 KiB
LLVM
; RUN: opt -insert-edge-profiling -o %t1 < %s
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; RUN: rm -f %t1.prof_data
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; RUN: lli %defaultjit -load %llvmshlibdir/libprofile_rt%shlibext %t1 \
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; RUN: -llvmprof-output %t1.prof_data
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; RUN: opt -profile-file %t1.prof_data -profile-metadata-loader -S -o - < %s \
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; RUN: | FileCheck %s
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; RUN: rm -f %t1.prof_data
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; FIXME: profile_rt.dll could be built on win32.
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; REQUIRES: loadable_module
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;; func_mod - Branch taken 6 times in 7.
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define i32 @func_mod(i32 %N) nounwind uwtable {
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entry:
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%retval = alloca i32, align 4
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%N.addr = alloca i32, align 4
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store i32 %N, i32* %N.addr, align 4
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%0 = load i32* %N.addr, align 4
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%rem = srem i32 %0, 7
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%tobool = icmp ne i32 %rem, 0
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br i1 %tobool, label %if.then, label %if.else
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; CHECK: br i1 %tobool, label %if.then, label %if.else, !prof !0
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if.then:
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store i32 1, i32* %retval
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br label %return
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if.else:
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store i32 0, i32* %retval
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br label %return
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return:
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%1 = load i32* %retval
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ret i32 %1
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}
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;; func_const_true - conditional branch which 100% taken probability.
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define i32 @func_const_true(i32 %N) nounwind uwtable {
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entry:
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%retval = alloca i32, align 4
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%N.addr = alloca i32, align 4
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store i32 %N, i32* %N.addr, align 4
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%0 = load i32* %N.addr, align 4
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%cmp = icmp eq i32 %0, 1
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br i1 %cmp, label %if.then, label %if.end
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; CHECK: br i1 %cmp, label %if.then, label %if.end, !prof !1
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if.then:
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store i32 1, i32* %retval
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br label %return
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if.end:
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store i32 0, i32* %retval
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br label %return
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return:
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%1 = load i32* %retval
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ret i32 %1
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}
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;; func_const_true - conditional branch which 100% not-taken probability.
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define i32 @func_const_false(i32 %N) nounwind uwtable {
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entry:
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%retval = alloca i32, align 4
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%N.addr = alloca i32, align 4
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store i32 %N, i32* %N.addr, align 4
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%0 = load i32* %N.addr, align 4
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%cmp = icmp eq i32 %0, 1
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br i1 %cmp, label %if.then, label %if.end
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; CHECK: br i1 %cmp, label %if.then, label %if.end, !prof !2
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if.then:
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store i32 1, i32* %retval
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br label %return
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if.end:
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store i32 0, i32* %retval
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br label %return
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return:
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%1 = load i32* %retval
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ret i32 %1
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}
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define i32 @main(i32 %argc, i8** %argv) nounwind uwtable {
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entry:
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%retval = alloca i32, align 4
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%argc.addr = alloca i32, align 4
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%argv.addr = alloca i8**, align 8
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%loop = alloca i32, align 4
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store i32 0, i32* %retval
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store i32 0, i32* %loop, align 4
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br label %for.cond
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for.cond:
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%0 = load i32* %loop, align 4
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%cmp = icmp slt i32 %0, 7000
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br i1 %cmp, label %for.body, label %for.end
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; CHECK: br i1 %cmp, label %for.body, label %for.end, !prof !3
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for.body:
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%1 = load i32* %loop, align 4
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%call = call i32 @func_mod(i32 %1)
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br label %for.inc
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for.inc:
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%2 = load i32* %loop, align 4
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%inc = add nsw i32 %2, 1
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store i32 %inc, i32* %loop, align 4
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br label %for.cond
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for.end:
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%call1 = call i32 @func_const_true(i32 1)
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%call2 = call i32 @func_const_false(i32 0)
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ret i32 0
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}
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; CHECK: !0 = metadata !{metadata !"branch_weights", i32 6000, i32 1000}
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; CHECK: !1 = metadata !{metadata !"branch_weights", i32 1, i32 0}
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; CHECK: !2 = metadata !{metadata !"branch_weights", i32 0, i32 1}
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; CHECK: !3 = metadata !{metadata !"branch_weights", i32 7000, i32 1}
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; CHECK-NOT: !4
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