forked from OSchip/llvm-project
166 lines
3.9 KiB
LLVM
166 lines
3.9 KiB
LLVM
; RUN: opt -insert-edge-profiling -o %t1 < %s
|
|
; RUN: rm -f %t1.prof_data
|
|
; RUN: lli %defaultjit -load %llvmshlibdir/libprofile_rt%shlibext %t1 \
|
|
; RUN: -llvmprof-output %t1.prof_data
|
|
; RUN: opt -profile-file %t1.prof_data -profile-metadata-loader -S -o - < %s \
|
|
; RUN: | FileCheck %s
|
|
; RUN: rm -f %t1.prof_data
|
|
|
|
; FIXME: profile_rt.dll could be built on win32.
|
|
; REQUIRES: loadable_module
|
|
|
|
;; func_switch - Test branch probabilities for a switch instruction with an
|
|
;; even chance of taking each case (or no case).
|
|
define i32 @func_switch(i32 %N) nounwind uwtable {
|
|
entry:
|
|
%retval = alloca i32, align 4
|
|
%N.addr = alloca i32, align 4
|
|
store i32 %N, i32* %N.addr, align 4
|
|
%0 = load i32* %N.addr, align 4
|
|
%rem = srem i32 %0, 4
|
|
switch i32 %rem, label %sw.epilog [
|
|
i32 0, label %sw.bb
|
|
i32 1, label %sw.bb1
|
|
i32 2, label %sw.bb2
|
|
]
|
|
; CHECK: ], !prof !0
|
|
|
|
sw.bb:
|
|
store i32 5, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb1:
|
|
store i32 6, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb2:
|
|
store i32 7, i32* %retval
|
|
br label %return
|
|
|
|
sw.epilog:
|
|
store i32 8, i32* %retval
|
|
br label %return
|
|
|
|
return:
|
|
%1 = load i32* %retval
|
|
ret i32 %1
|
|
}
|
|
|
|
;; func_switch_switch - Test branch probabilities in a switch-instruction that
|
|
;; leads to further switch instructions. The first-tier switch occludes some
|
|
;; possibilities in the second-tier switches, leading to some branches having a
|
|
;; 0 probability.
|
|
define i32 @func_switch_switch(i32 %N) nounwind uwtable {
|
|
entry:
|
|
%retval = alloca i32, align 4
|
|
%N.addr = alloca i32, align 4
|
|
store i32 %N, i32* %N.addr, align 4
|
|
%0 = load i32* %N.addr, align 4
|
|
%rem = srem i32 %0, 2
|
|
switch i32 %rem, label %sw.default11 [
|
|
i32 0, label %sw.bb
|
|
i32 1, label %sw.bb5
|
|
]
|
|
; CHECK: ], !prof !1
|
|
|
|
sw.bb:
|
|
%1 = load i32* %N.addr, align 4
|
|
%rem1 = srem i32 %1, 4
|
|
switch i32 %rem1, label %sw.default [
|
|
i32 0, label %sw.bb2
|
|
i32 1, label %sw.bb3
|
|
i32 2, label %sw.bb4
|
|
]
|
|
; CHECK: ], !prof !2
|
|
|
|
sw.bb2:
|
|
store i32 5, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb3:
|
|
store i32 6, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb4:
|
|
store i32 7, i32* %retval
|
|
br label %return
|
|
|
|
sw.default:
|
|
store i32 8, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb5:
|
|
%2 = load i32* %N.addr, align 4
|
|
%rem6 = srem i32 %2, 4
|
|
switch i32 %rem6, label %sw.default10 [
|
|
i32 0, label %sw.bb7
|
|
i32 1, label %sw.bb8
|
|
i32 2, label %sw.bb9
|
|
]
|
|
; CHECK: ], !prof !3
|
|
|
|
sw.bb7:
|
|
store i32 9, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb8:
|
|
store i32 10, i32* %retval
|
|
br label %return
|
|
|
|
sw.bb9:
|
|
store i32 11, i32* %retval
|
|
br label %return
|
|
|
|
sw.default10:
|
|
store i32 12, i32* %retval
|
|
br label %return
|
|
|
|
sw.default11:
|
|
store i32 13, i32* %retval
|
|
br label %return
|
|
|
|
return:
|
|
%3 = load i32* %retval
|
|
ret i32 %3
|
|
}
|
|
|
|
define i32 @main(i32 %argc, i8** %argv) nounwind uwtable {
|
|
entry:
|
|
%retval = alloca i32, align 4
|
|
%argc.addr = alloca i32, align 4
|
|
%argv.addr = alloca i8**, align 8
|
|
%loop = alloca i32, align 4
|
|
store i32 0, i32* %retval
|
|
store i32 0, i32* %loop, align 4
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%0 = load i32* %loop, align 4
|
|
%cmp = icmp slt i32 %0, 4000
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
; CHECK: br i1 %cmp, label %for.body, label %for.end, !prof !4
|
|
|
|
for.body:
|
|
%1 = load i32* %loop, align 4
|
|
%call = call i32 @func_switch(i32 %1)
|
|
%2 = load i32* %loop, align 4
|
|
%call1 = call i32 @func_switch_switch(i32 %2)
|
|
br label %for.inc
|
|
|
|
for.inc:
|
|
%3 = load i32* %loop, align 4
|
|
%inc = add nsw i32 %3, 1
|
|
store i32 %inc, i32* %loop, align 4
|
|
br label %for.cond
|
|
|
|
for.end:
|
|
ret i32 0
|
|
}
|
|
|
|
; CHECK: !0 = metadata !{metadata !"branch_weights", i32 1000, i32 1000, i32 1000, i32 1000}
|
|
; CHECK: !1 = metadata !{metadata !"branch_weights", i32 0, i32 2000, i32 2000}
|
|
; CHECK: !2 = metadata !{metadata !"branch_weights", i32 0, i32 1000, i32 0, i32 1000}
|
|
; CHECK: !3 = metadata !{metadata !"branch_weights", i32 1000, i32 0, i32 1000, i32 0}
|
|
; CHECK: !4 = metadata !{metadata !"branch_weights", i32 4000, i32 1}
|
|
; CHECK-NOT: !5
|