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RedBear-OS/local/recipes/dev/libclc/source/clang/test/CodeGenCXX/attr-likelihood-if-branch-weights.cpp
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vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class) 
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

374 lines
14 KiB
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Raw Blame History

// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
// RUN: %clang_cc1 -O1 -disable-llvm-passes -emit-llvm %s -o - -triple=x86_64-- | FileCheck %s
extern volatile bool b;
extern volatile int i;
extern bool A();
extern bool B();
// CHECK-LABEL: @_Z1fv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[RETVAL:%.*]] = alloca i1, align 1
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2:![0-9]+]], !range [[RNG6:![0-9]+]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 true)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK: if.then:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Av()
// CHECK-NEXT: store i1 [[CALL]], ptr [[RETVAL]], align 1
// CHECK-NEXT: br label [[RETURN:%.*]]
// CHECK: if.end:
// CHECK-NEXT: [[CALL1:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: store i1 [[CALL1]], ptr [[RETVAL]], align 1
// CHECK-NEXT: br label [[RETURN]]
// CHECK: return:
// CHECK-NEXT: [[TMP1:%.*]] = load i1, ptr [[RETVAL]], align 1
// CHECK-NEXT: ret i1 [[TMP1]]
//
bool f() {
if (b)
[[likely]] {
return A();
}
return B();
}
// CHECK-LABEL: @_Z1gv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[RETVAL:%.*]] = alloca i1, align 1
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK: if.then:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Av()
// CHECK-NEXT: store i1 [[CALL]], ptr [[RETVAL]], align 1
// CHECK-NEXT: br label [[RETURN:%.*]]
// CHECK: if.end:
// CHECK-NEXT: [[CALL1:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: store i1 [[CALL1]], ptr [[RETVAL]], align 1
// CHECK-NEXT: br label [[RETURN]]
// CHECK: return:
// CHECK-NEXT: [[TMP1:%.*]] = load i1, ptr [[RETVAL]], align 1
// CHECK-NEXT: ret i1 [[TMP1]]
//
bool g() {
if (b)
[[unlikely]] {
return A();
}
return B();
}
// CHECK-LABEL: @_Z1hv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[RETVAL:%.*]] = alloca i1, align 1
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK: if.then:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Av()
// CHECK-NEXT: store i1 [[CALL]], ptr [[RETVAL]], align 1
// CHECK-NEXT: br label [[RETURN:%.*]]
// CHECK: if.end:
// CHECK-NEXT: [[CALL1:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: store i1 [[CALL1]], ptr [[RETVAL]], align 1
// CHECK-NEXT: br label [[RETURN]]
// CHECK: return:
// CHECK-NEXT: [[TMP1:%.*]] = load i1, ptr [[RETVAL]], align 1
// CHECK-NEXT: ret i1 [[TMP1]]
//
bool h() {
if (b)
[[unlikely]] return A();
return B();
}
// CHECK-LABEL: @_Z8NullStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
// CHECK: if.then:
// CHECK-NEXT: br label [[IF_END:%.*]]
// CHECK: if.else:
// CHECK-NEXT: store volatile i8 1, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: ret void
//
void NullStmt() {
if (b)
[[unlikely]];
else {
// Make sure the branches aren't optimized away.
b = true;
}
}
// CHECK-LABEL: @_Z6IfStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END2:%.*]]
// CHECK: if.then:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: br i1 [[CALL]], label [[IF_THEN1:%.*]], label [[IF_END:%.*]]
// CHECK: if.then1:
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: br label [[IF_END2]]
// CHECK: if.end2:
// CHECK-NEXT: [[TMP1:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL3:%.*]] = trunc i8 [[TMP1]] to i1
// CHECK-NEXT: br i1 [[TOBOOL3]], label [[IF_THEN4:%.*]], label [[IF_END8:%.*]]
// CHECK: if.then4:
// CHECK-NEXT: [[CALL5:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: [[CALL5_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[CALL5]], i1 false)
// CHECK-NEXT: br i1 [[CALL5_EXPVAL]], label [[IF_THEN6:%.*]], label [[IF_END7:%.*]]
// CHECK: if.then6:
// CHECK-NEXT: store volatile i8 0, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[IF_END7]]
// CHECK: if.end7:
// CHECK-NEXT: br label [[IF_END8]]
// CHECK: if.end8:
// CHECK-NEXT: ret void
//
void IfStmt() {
if (b)
[[unlikely]] if (B()) {}
if (b) {
if (B())
[[unlikely]] { b = false; }
}
}
// CHECK-LABEL: @_Z9WhileStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK: if.then:
// CHECK-NEXT: br label [[WHILE_COND:%.*]]
// CHECK: while.cond:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: br i1 [[CALL]], label [[WHILE_BODY:%.*]], label [[WHILE_END:%.*]]
// CHECK: while.body:
// CHECK-NEXT: br label [[WHILE_COND]], !llvm.loop [[LOOP7:![0-9]+]]
// CHECK: while.end:
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: [[TMP1:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL1:%.*]] = trunc i8 [[TMP1]] to i1
// CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_END7:%.*]]
// CHECK: if.then2:
// CHECK-NEXT: br label [[WHILE_COND3:%.*]]
// CHECK: while.cond3:
// CHECK-NEXT: [[CALL4:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: [[CALL4_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[CALL4]], i1 false)
// CHECK-NEXT: br i1 [[CALL4_EXPVAL]], label [[WHILE_BODY5:%.*]], label [[WHILE_END6:%.*]]
// CHECK: while.body5:
// CHECK-NEXT: store volatile i8 0, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[WHILE_COND3]], !llvm.loop [[LOOP10:![0-9]+]]
// CHECK: while.end6:
// CHECK-NEXT: br label [[IF_END7]]
// CHECK: if.end7:
// CHECK-NEXT: ret void
//
void WhileStmt() {
if (b)
[[unlikely]] while (B()) {}
if (b)
while (B())
[[unlikely]] { b = false; }
}
// CHECK-LABEL: @_Z6DoStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK: if.then:
// CHECK-NEXT: br label [[DO_BODY:%.*]]
// CHECK: do.body:
// CHECK-NEXT: br label [[DO_COND:%.*]]
// CHECK: do.cond:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: br i1 [[CALL]], label [[DO_BODY]], label [[DO_END:%.*]], !llvm.loop [[LOOP11:![0-9]+]]
// CHECK: do.end:
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: [[TMP1:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL1:%.*]] = trunc i8 [[TMP1]] to i1
// CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_END7:%.*]]
// CHECK: if.then2:
// CHECK-NEXT: br label [[DO_BODY3:%.*]]
// CHECK: do.body3:
// CHECK-NEXT: br label [[DO_COND4:%.*]]
// CHECK: do.cond4:
// CHECK-NEXT: [[CALL5:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: br i1 [[CALL5]], label [[DO_BODY3]], label [[DO_END6:%.*]], !llvm.loop [[LOOP12:![0-9]+]]
// CHECK: do.end6:
// CHECK-NEXT: br label [[IF_END7]]
// CHECK: if.end7:
// CHECK-NEXT: ret void
//
void DoStmt() {
if (b)
[[unlikely]] do {}
while (B())
;
if (b)
do
[[unlikely]] {}
while (B());
}
// CHECK-LABEL: @_Z7ForStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
// CHECK: if.then:
// CHECK-NEXT: br label [[FOR_COND:%.*]]
// CHECK: for.cond:
// CHECK-NEXT: [[CALL:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: br i1 [[CALL]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
// CHECK: for.body:
// CHECK-NEXT: br label [[FOR_COND]], !llvm.loop [[LOOP13:![0-9]+]]
// CHECK: for.end:
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: [[TMP1:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL1:%.*]] = trunc i8 [[TMP1]] to i1
// CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_END7:%.*]]
// CHECK: if.then2:
// CHECK-NEXT: br label [[FOR_COND3:%.*]]
// CHECK: for.cond3:
// CHECK-NEXT: [[CALL4:%.*]] = call noundef zeroext i1 @_Z1Bv()
// CHECK-NEXT: [[CALL4_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[CALL4]], i1 false)
// CHECK-NEXT: br i1 [[CALL4_EXPVAL]], label [[FOR_BODY5:%.*]], label [[FOR_END6:%.*]]
// CHECK: for.body5:
// CHECK-NEXT: br label [[FOR_COND3]], !llvm.loop [[LOOP14:![0-9]+]]
// CHECK: for.end6:
// CHECK-NEXT: br label [[IF_END7]]
// CHECK: if.end7:
// CHECK-NEXT: ret void
//
void ForStmt() {
if (b)
[[unlikely]] for (; B();) {}
if (b)
for (; B();)
[[unlikely]] {}
}
// CHECK-LABEL: @_Z8GotoStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
// CHECK: if.then:
// CHECK-NEXT: br label [[END:%.*]]
// CHECK: if.else:
// CHECK-NEXT: store volatile i8 1, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[IF_END:%.*]]
// CHECK: if.end:
// CHECK-NEXT: br label [[END]]
// CHECK: end:
// CHECK-NEXT: ret void
//
void GotoStmt() {
if (b)
[[unlikely]] goto end;
else {
// Make sure the branches aren't optimized away.
b = true;
}
end:;
}
// CHECK-LABEL: @_Z10ReturnStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
// CHECK: if.then:
// CHECK-NEXT: br label [[IF_END:%.*]]
// CHECK: if.else:
// CHECK-NEXT: store volatile i8 1, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: ret void
//
void ReturnStmt() {
if (b)
[[unlikely]] return;
else {
// Make sure the branches aren't optimized away.
b = true;
}
}
// CHECK-LABEL: @_Z10SwitchStmtv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[TMP0]] to i1
// CHECK-NEXT: [[TOBOOL_EXPVAL:%.*]] = call i1 @llvm.expect.i1(i1 [[TOBOOL]], i1 false)
// CHECK-NEXT: br i1 [[TOBOOL_EXPVAL]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
// CHECK: if.then:
// CHECK-NEXT: [[TMP1:%.*]] = load volatile i32, ptr @i, align 4, !tbaa [[TBAA15:![0-9]+]]
// CHECK-NEXT: switch i32 [[TMP1]], label [[SW_EPILOG:%.*]] [
// CHECK-NEXT: ]
// CHECK: sw.epilog:
// CHECK-NEXT: br label [[IF_END:%.*]]
// CHECK: if.else:
// CHECK-NEXT: store volatile i8 1, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[IF_END]]
// CHECK: if.end:
// CHECK-NEXT: [[TMP2:%.*]] = load volatile i8, ptr @b, align 1, !tbaa [[TBAA2]], !range [[RNG6]]
// CHECK-NEXT: [[TOBOOL1:%.*]] = trunc i8 [[TMP2]] to i1
// CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_ELSE4:%.*]]
// CHECK: if.then2:
// CHECK-NEXT: [[TMP3:%.*]] = load volatile i32, ptr @i, align 4, !tbaa [[TBAA15]]
// CHECK-NEXT: switch i32 [[TMP3]], label [[SW_EPILOG3:%.*]] [
// CHECK-NEXT: ]
// CHECK: sw.epilog3:
// CHECK-NEXT: br label [[IF_END5:%.*]]
// CHECK: if.else4:
// CHECK-NEXT: store volatile i8 1, ptr @b, align 1, !tbaa [[TBAA2]]
// CHECK-NEXT: br label [[IF_END5]]
// CHECK: if.end5:
// CHECK-NEXT: ret void
//
void SwitchStmt() {
if (b)
[[unlikely]] switch (i) {}
else {
// Make sure the branches aren't optimized away.
b = true;
}
if (b)
switch (i)
[[unlikely]] {}
else {
// Make sure the branches aren't optimized away.
b = true;
}
}
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