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-rw-r--r--test/Analysis/BasicAA/noalias-geps.ll54
-rw-r--r--test/Analysis/BasicAA/phi-speculation.ll33
-rw-r--r--test/Analysis/BranchProbabilityInfo/basic.ll27
-rw-r--r--test/Analysis/Profiling/load-branch-weights-ifs.ll122
-rw-r--r--test/Analysis/Profiling/load-branch-weights-loops.ll188
-rw-r--r--test/Analysis/Profiling/load-branch-weights-switches.ll165
6 files changed, 589 insertions, 0 deletions
diff --git a/test/Analysis/BasicAA/noalias-geps.ll b/test/Analysis/BasicAA/noalias-geps.ll
new file mode 100644
index 0000000000..a93d778da0
--- /dev/null
+++ b/test/Analysis/BasicAA/noalias-geps.ll
@@ -0,0 +1,54 @@
+; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+
+; Check that geps with equal base offsets of noalias base pointers stay noalias.
+define i32 @test(i32* %p, i16 %i) {
+ %pi = getelementptr i32* %p, i32 0
+ %pi.next = getelementptr i32* %p, i32 1
+ %b = icmp eq i16 %i, 0
+ br i1 %b, label %bb1, label %bb2
+
+bb1:
+ %f = getelementptr i32* %pi, i32 1
+ %g = getelementptr i32* %pi.next, i32 1
+ br label %bb3
+bb2:
+ %f2 = getelementptr i32* %pi, i32 1
+ %g2 = getelementptr i32* %pi.next, i32 1
+ br label %bb3
+
+bb3:
+ %ptr_phi = phi i32* [ %f, %bb1 ], [ %f2, %bb2 ]
+ %ptr_phi2 = phi i32* [ %g, %bb1 ], [ %g2, %bb2 ]
+; CHECK: NoAlias: i32* %f1, i32* %g1
+ %f1 = getelementptr i32* %ptr_phi , i32 1
+ %g1 = getelementptr i32* %ptr_phi2 , i32 1
+
+ret i32 0
+}
+
+; Check that geps with equal indices of noalias base pointers stay noalias.
+define i32 @test2([2 x i32]* %p, i32 %i) {
+ %pi = getelementptr [2 x i32]* %p, i32 0
+ %pi.next = getelementptr [2 x i32]* %p, i32 1
+ %b = icmp eq i32 %i, 0
+ br i1 %b, label %bb1, label %bb2
+
+bb1:
+ %f = getelementptr [2 x i32]* %pi, i32 1
+ %g = getelementptr [2 x i32]* %pi.next, i32 1
+ br label %bb3
+bb2:
+ %f2 = getelementptr [2 x i32]* %pi, i32 1
+ %g2 = getelementptr [2 x i32]* %pi.next, i32 1
+ br label %bb3
+bb3:
+ %ptr_phi = phi [2 x i32]* [ %f, %bb1 ], [ %f2, %bb2 ]
+ %ptr_phi2 = phi [2 x i32]* [ %g, %bb1 ], [ %g2, %bb2 ]
+; CHECK: NoAlias: i32* %f1, i32* %g1
+ %f1 = getelementptr [2 x i32]* %ptr_phi , i32 1, i32 %i
+ %g1 = getelementptr [2 x i32]* %ptr_phi2 , i32 1, i32 %i
+
+ret i32 0
+}
diff --git a/test/Analysis/BasicAA/phi-speculation.ll b/test/Analysis/BasicAA/phi-speculation.ll
new file mode 100644
index 0000000000..21c6592986
--- /dev/null
+++ b/test/Analysis/BasicAA/phi-speculation.ll
@@ -0,0 +1,33 @@
+target datalayout =
+"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+
+; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+
+; ptr_phi and ptr2_phi do not alias.
+; CHECK: NoAlias: i32* %ptr2_phi, i32* %ptr_phi
+
+define i32 @test_noalias(i32* %ptr2, i32 %count, i32* %coeff) {
+entry:
+ %ptr = getelementptr inbounds i32* %ptr2, i64 1
+ br label %while.body
+
+while.body:
+ %num = phi i32 [ %count, %entry ], [ %dec, %while.body ]
+ %ptr_phi = phi i32* [ %ptr, %entry ], [ %ptr_inc, %while.body ]
+ %ptr2_phi = phi i32* [ %ptr2, %entry ], [ %ptr2_inc, %while.body ]
+ %result.09 = phi i32 [ 0 , %entry ], [ %add, %while.body ]
+ %dec = add nsw i32 %num, -1
+ %0 = load i32* %ptr_phi, align 4
+ store i32 %0, i32* %ptr2_phi, align 4
+ %1 = load i32* %coeff, align 4
+ %2 = load i32* %ptr_phi, align 4
+ %mul = mul nsw i32 %1, %2
+ %add = add nsw i32 %mul, %result.09
+ %tobool = icmp eq i32 %dec, 0
+ %ptr_inc = getelementptr inbounds i32* %ptr_phi, i64 1
+ %ptr2_inc = getelementptr inbounds i32* %ptr2_phi, i64 1
+ br i1 %tobool, label %the_exit, label %while.body
+
+the_exit:
+ ret i32 %add
+}
diff --git a/test/Analysis/BranchProbabilityInfo/basic.ll b/test/Analysis/BranchProbabilityInfo/basic.ll
index 74d06a18f7..08adfa8a36 100644
--- a/test/Analysis/BranchProbabilityInfo/basic.ll
+++ b/test/Analysis/BranchProbabilityInfo/basic.ll
@@ -88,3 +88,30 @@ exit:
}
!1 = metadata !{metadata !"branch_weights", i32 4, i32 4, i32 64, i32 4, i32 4}
+
+define i32 @test4(i32 %x) nounwind uwtable readnone ssp {
+; CHECK: Printing analysis {{.*}} for function 'test4'
+entry:
+ %conv = sext i32 %x to i64
+ switch i64 %conv, label %return [
+ i64 0, label %sw.bb
+ i64 1, label %sw.bb
+ i64 2, label %sw.bb
+ i64 5, label %sw.bb1
+ ], !prof !2
+; CHECK: edge entry -> return probability is 7 / 85
+; CHECK: edge entry -> sw.bb probability is 14 / 85
+; CHECK: edge entry -> sw.bb1 probability is 64 / 85
+
+sw.bb:
+ br label %return
+
+sw.bb1:
+ br label %return
+
+return:
+ %retval.0 = phi i32 [ 5, %sw.bb1 ], [ 1, %sw.bb ], [ 0, %entry ]
+ ret i32 %retval.0
+}
+
+!2 = metadata !{metadata !"branch_weights", i32 7, i32 6, i32 4, i32 4, i32 64}
diff --git a/test/Analysis/Profiling/load-branch-weights-ifs.ll b/test/Analysis/Profiling/load-branch-weights-ifs.ll
new file mode 100644
index 0000000000..ddbaf96916
--- /dev/null
+++ b/test/Analysis/Profiling/load-branch-weights-ifs.ll
@@ -0,0 +1,122 @@
+; RUN: opt -insert-edge-profiling -o %t1 < %s
+; RUN: rm -f %t1.prof_data
+; RUN: lli -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_mod - Branch taken 6 times in 7.
+define i32 @func_mod(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, 7
+ %tobool = icmp ne i32 %rem, 0
+ br i1 %tobool, label %if.then, label %if.else
+; CHECK: br i1 %tobool, label %if.then, label %if.else, !prof !0
+
+if.then:
+ store i32 1, i32* %retval
+ br label %return
+
+if.else:
+ store i32 0, i32* %retval
+ br label %return
+
+return:
+ %1 = load i32* %retval
+ ret i32 %1
+}
+
+;; func_const_true - conditional branch which 100% taken probability.
+define i32 @func_const_true(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
+ %cmp = icmp eq i32 %0, 1
+ br i1 %cmp, label %if.then, label %if.end
+; CHECK: br i1 %cmp, label %if.then, label %if.end, !prof !1
+
+if.then:
+ store i32 1, i32* %retval
+ br label %return
+
+if.end:
+ store i32 0, i32* %retval
+ br label %return
+
+return:
+ %1 = load i32* %retval
+ ret i32 %1
+}
+
+;; func_const_true - conditional branch which 100% not-taken probability.
+define i32 @func_const_false(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
+ %cmp = icmp eq i32 %0, 1
+ br i1 %cmp, label %if.then, label %if.end
+; CHECK: br i1 %cmp, label %if.then, label %if.end, !prof !2
+
+if.then:
+ store i32 1, i32* %retval
+ br label %return
+
+if.end:
+ store i32 0, i32* %retval
+ br label %return
+
+return:
+ %1 = load i32* %retval
+ ret i32 %1
+}
+
+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, 7000
+ br i1 %cmp, label %for.body, label %for.end
+; CHECK: br i1 %cmp, label %for.body, label %for.end, !prof !3
+
+for.body:
+ %1 = load i32* %loop, align 4
+ %call = call i32 @func_mod(i32 %1)
+ br label %for.inc
+
+for.inc:
+ %2 = load i32* %loop, align 4
+ %inc = add nsw i32 %2, 1
+ store i32 %inc, i32* %loop, align 4
+ br label %for.cond
+
+for.end:
+ %call1 = call i32 @func_const_true(i32 1)
+ %call2 = call i32 @func_const_false(i32 0)
+ ret i32 0
+}
+
+; CHECK: !0 = metadata !{metadata !"branch_weights", i32 6000, i32 1000}
+; CHECK: !1 = metadata !{metadata !"branch_weights", i32 1, i32 0}
+; CHECK: !2 = metadata !{metadata !"branch_weights", i32 0, i32 1}
+; CHECK: !3 = metadata !{metadata !"branch_weights", i32 7000, i32 1}
+; CHECK-NOT: !4
diff --git a/test/Analysis/Profiling/load-branch-weights-loops.ll b/test/Analysis/Profiling/load-branch-weights-loops.ll
new file mode 100644
index 0000000000..476f377b47
--- /dev/null
+++ b/test/Analysis/Profiling/load-branch-weights-loops.ll
@@ -0,0 +1,188 @@
+; RUN: opt -insert-edge-profiling -o %t1 < %s
+; RUN: rm -f %t1.prof_data
+; RUN: lli -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_for - Test branch probabilities for a vanilla for loop.
+define i32 @func_for(i32 %N) nounwind uwtable {
+entry:
+ %N.addr = alloca i32, align 4
+ %ret = alloca i32, align 4
+ %loop = alloca i32, align 4
+ store i32 %N, i32* %N.addr, align 4
+ store i32 0, i32* %ret, align 4
+ store i32 0, i32* %loop, align 4
+ br label %for.cond
+
+for.cond:
+ %0 = load i32* %loop, align 4
+ %1 = load i32* %N.addr, align 4
+ %cmp = icmp slt i32 %0, %1
+ br i1 %cmp, label %for.body, label %for.end
+; CHECK: br i1 %cmp, label %for.body, label %for.end, !prof !0
+
+for.body:
+ %2 = load i32* %N.addr, align 4
+ %3 = load i32* %ret, align 4
+ %add = add nsw i32 %3, %2
+ store i32 %add, i32* %ret, align 4
+ br label %for.inc
+
+for.inc:
+ %4 = load i32* %loop, align 4
+ %inc = add nsw i32 %4, 1
+ store i32 %inc, i32* %loop, align 4
+ br label %for.cond
+
+for.end:
+ %5 = load i32* %ret, align 4
+ ret i32 %5
+}
+
+;; func_for_odd - Test branch probabilities for a for loop with a continue and
+;; a break.
+define i32 @func_for_odd(i32 %N) nounwind uwtable {
+entry:
+ %N.addr = alloca i32, align 4
+ %ret = alloca i32, align 4
+ %loop = alloca i32, align 4
+ store i32 %N, i32* %N.addr, align 4
+ store i32 0, i32* %ret, align 4
+ store i32 0, i32* %loop, align 4
+ br label %for.cond
+
+for.cond:
+ %0 = load i32* %loop, align 4
+ %1 = load i32* %N.addr, align 4
+ %cmp = icmp slt i32 %0, %1
+ br i1 %cmp, label %for.body, label %for.end
+; CHECK: br i1 %cmp, label %for.body, label %for.end, !prof !1
+
+for.body:
+ %2 = load i32* %loop, align 4
+ %rem = srem i32 %2, 10
+ %tobool = icmp ne i32 %rem, 0
+ br i1 %tobool, label %if.then, label %if.end
+; CHECK: br i1 %tobool, label %if.then, label %if.end, !prof !2
+
+if.then:
+ br label %for.inc
+
+if.end:
+ %3 = load i32* %loop, align 4
+ %cmp1 = icmp eq i32 %3, 500
+ br i1 %cmp1, label %if.then2, label %if.end3
+; CHECK: br i1 %cmp1, label %if.then2, label %if.end3, !prof !3
+
+if.then2:
+ br label %for.end
+
+if.end3:
+ %4 = load i32* %N.addr, align 4
+ %5 = load i32* %ret, align 4
+ %add = add nsw i32 %5, %4
+ store i32 %add, i32* %ret, align 4
+ br label %for.inc
+
+for.inc:
+ %6 = load i32* %loop, align 4
+ %inc = add nsw i32 %6, 1
+ store i32 %inc, i32* %loop, align 4
+ br label %for.cond
+
+for.end:
+ %7 = load i32* %ret, align 4
+ ret i32 %7
+}
+
+;; func_while - Test branch probability in a vanilla while loop.
+define i32 @func_while(i32 %N) nounwind uwtable {
+entry:
+ %N.addr = alloca i32, align 4
+ %ret = alloca i32, align 4
+ %loop = alloca i32, align 4
+ store i32 %N, i32* %N.addr, align 4
+ store i32 0, i32* %ret, align 4
+ store i32 0, i32* %loop, align 4
+ br label %while.cond
+
+while.cond:
+ %0 = load i32* %loop, align 4
+ %1 = load i32* %N.addr, align 4
+ %cmp = icmp slt i32 %0, %1
+ br i1 %cmp, label %while.body, label %while.end
+; CHECK: br i1 %cmp, label %while.body, label %while.end, !prof !0
+
+while.body:
+ %2 = load i32* %N.addr, align 4
+ %3 = load i32* %ret, align 4
+ %add = add nsw i32 %3, %2
+ store i32 %add, i32* %ret, align 4
+ %4 = load i32* %loop, align 4
+ %inc = add nsw i32 %4, 1
+ store i32 %inc, i32* %loop, align 4
+ br label %while.cond
+
+while.end:
+ %5 = load i32* %ret, align 4
+ ret i32 %5
+}
+
+;; func_while - Test branch probability in a vanilla do-while loop.
+define i32 @func_do_while(i32 %N) nounwind uwtable {
+entry:
+ %N.addr = alloca i32, align 4
+ %ret = alloca i32, align 4
+ %loop = alloca i32, align 4
+ store i32 %N, i32* %N.addr, align 4
+ store i32 0, i32* %ret, align 4
+ store i32 0, i32* %loop, align 4
+ br label %do.body
+
+do.body:
+ %0 = load i32* %N.addr, align 4
+ %1 = load i32* %ret, align 4
+ %add = add nsw i32 %1, %0
+ store i32 %add, i32* %ret, align 4
+ %2 = load i32* %loop, align 4
+ %inc = add nsw i32 %2, 1
+ store i32 %inc, i32* %loop, align 4
+ br label %do.cond
+
+do.cond:
+ %3 = load i32* %loop, align 4
+ %4 = load i32* %N.addr, align 4
+ %cmp = icmp slt i32 %3, %4
+ br i1 %cmp, label %do.body, label %do.end
+; CHECK: br i1 %cmp, label %do.body, label %do.end, !prof !4
+
+do.end:
+ %5 = load i32* %ret, align 4
+ ret i32 %5
+}
+
+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
+ store i32 0, i32* %retval
+ %call = call i32 @func_for(i32 1000)
+ %call1 = call i32 @func_for_odd(i32 1000)
+ %call2 = call i32 @func_while(i32 1000)
+ %call3 = call i32 @func_do_while(i32 1000)
+ ret i32 0
+}
+
+!0 = metadata !{metadata !"branch_weights", i32 1000, i32 1}
+!1 = metadata !{metadata !"branch_weights", i32 501, i32 0}
+!2 = metadata !{metadata !"branch_weights", i32 450, i32 51}
+!3 = metadata !{metadata !"branch_weights", i32 1, i32 50}
+!4 = metadata !{metadata !"branch_weights", i32 999, i32 1}
+; CHECK-NOT: !5
diff --git a/test/Analysis/Profiling/load-branch-weights-switches.ll b/test/Analysis/Profiling/load-branch-weights-switches.ll
new file mode 100644
index 0000000000..be11f040a7
--- /dev/null
+++ b/test/Analysis/Profiling/load-branch-weights-switches.ll
@@ -0,0 +1,165 @@
+; RUN: opt -insert-edge-profiling -o %t1 < %s
+; RUN: rm -f %t1.prof_data
+; RUN: lli -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